55723163237 has 6 divisors (see below), whose sum is σ = 64820822598. Its totient is φ = 47762711304.

The previous prime is 55723163233. The next prime is 55723163239. The reversal of 55723163237 is 73236132755.

It can be written as a sum of positive squares in only one way, i.e., 41257328161 + 14465835076 = 203119^2 + 120274^2 .

It is not a de Polignac number, because 55723163237 - 2² = 55723163233 is a prime.

It is a super-2 number, since 2×55723163237² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55723163233) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 568603658 + ... + 568603755.

It is an arithmetic number, because the mean of its divisors is an integer number (10803470433).

Almost surely, 2^55723163237 is an apocalyptic number.

It is an amenable number.

55723163237 is a deficient number, since it is larger than the sum of its proper divisors (9097659361).

55723163237 is a wasteful number, since it uses less digits than its factorization.

55723163237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1137207427 (or 1137207420 counting only the distinct ones).

The product of its digits is 793800, while the sum is 44.

The spelling of 55723163237 in words is "fifty-five billion, seven hundred twenty-three million, one hundred sixty-three thousand, two hundred thirty-seven".