Search a number
-
+
12553050101 = 23545784787
BaseRepresentation
bin10111011000011100…
…00101011111110101
31012101211210000110112
423230032011133311
5201202040100401
65433343232405
7623035110464
oct135416053765
935354700415
1012553050101
115361962379
122523ba8705
1312509023c7
148712629db
154d70b73bb
hex2ec3857f5

12553050101 has 4 divisors (see below), whose sum is σ = 13098834912. Its totient is φ = 12007265292.

The previous prime is 12553050079. The next prime is 12553050109. The reversal of 12553050101 is 10105035521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12553050101 - 218 = 12552787957 is a prime.

It is a super-2 number, since 2×125530501012 (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 545784787 = 12553050101 / (1 + 2 + 5 + 5 + 3 + 0 + 5 + 0 + 1 + 0 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12553050109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 272892371 + ... + 272892416.

It is an arithmetic number, because the mean of its divisors is an integer number (3274708728).

Almost surely, 212553050101 is an apocalyptic number.

It is an amenable number.

12553050101 is a deficient number, since it is larger than the sum of its proper divisors (545784811).

12553050101 is an equidigital number, since it uses as much as digits as its factorization.

12553050101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545784810.

The product of its (nonzero) digits is 750, while the sum is 23.

Adding to 12553050101 its reverse (10105035521), we get a palindrome (22658085622).

The spelling of 12553050101 in words is "twelve billion, five hundred fifty-three million, fifty thousand, one hundred one".

Divisors: 1 23 545784787 12553050101