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22550510501 = 183011232201
BaseRepresentation
bin10101000000000111…
…010111101110100101
32011012120202121220122
4111000013113232211
5332140412314001
614205355411325
71425552114401
oct250007275645
964176677818
1022550510501
1196221a2342
124454153b45
132184c1094c
14113cd24101
158beb22b1b
hex5401d7ba5

22550510501 has 4 divisors (see below), whose sum is σ = 22551761004. Its totient is φ = 22549260000.

The previous prime is 22550510497. The next prime is 22550510551. The reversal of 22550510501 is 10501505522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10501505522 = 25250752761.

It can be written as a sum of positive squares in 2 ways, for example, as 9543336100 + 13007174401 = 97690^2 + 114049^2 .

It is a cyclic number.

It is not a de Polignac number, because 22550510501 - 22 = 22550510497 is a prime.

It is a super-2 number, since 2×225505105012 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22550510551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 597800 + ... + 634401.

It is an arithmetic number, because the mean of its divisors is an integer number (5637940251).

Almost surely, 222550510501 is an apocalyptic number.

It is an amenable number.

22550510501 is a deficient number, since it is larger than the sum of its proper divisors (1250503).

22550510501 is a wasteful number, since it uses less digits than its factorization.

22550510501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1250502.

The product of its (nonzero) digits is 2500, while the sum is 26.

The spelling of 22550510501 in words is "twenty-two billion, five hundred fifty million, five hundred ten thousand, five hundred one".

Divisors: 1 18301 1232201 22550510501