Search a number
-
+
53249461 = 172130941
BaseRepresentation
bin1100101100100…
…0010110110101
310201012100112021
43023020112311
5102112440321
65141153141
71214420146
oct313102665
9121170467
1053249461
1128070121
12159bb7b1
13b055475
147101acd
154a1c941
hex32c85b5

53249461 has 4 divisors (see below), whose sum is σ = 53282124. Its totient is φ = 53216800.

The previous prime is 53249429. The next prime is 53249467. The reversal of 53249461 is 16494235.

It is a happy number.

53249461 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16494235 = 53298847.

It can be written as a sum of positive squares in 2 ways, for example, as 27300625 + 25948836 = 5225^2 + 5094^2 .

It is a cyclic number.

It is not a de Polignac number, because 53249461 - 25 = 53249429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53249467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13750 + ... + 17191.

It is an arithmetic number, because the mean of its divisors is an integer number (13320531).

Almost surely, 253249461 is an apocalyptic number.

It is an amenable number.

53249461 is a deficient number, since it is larger than the sum of its proper divisors (32663).

53249461 is a wasteful number, since it uses less digits than its factorization.

53249461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32662.

The product of its digits is 25920, while the sum is 34.

The square root of 53249461 is about 7297.2228278983. Note that the first 3 decimals coincide. The cubic root of 53249461 is about 376.2169908091.

The spelling of 53249461 in words is "fifty-three million, two hundred forty-nine thousand, four hundred sixty-one".

Divisors: 1 1721 30941 53249461