55607321592 has 96 divisors (see below), whose sum is σ = 155979158400. Its totient is φ = 17875613952.

The previous prime is 55607321587. The next prime is 55607321659. The reversal of 55607321592 is 29512370655.

55607321592 is a `hidden beast` number, since 5 + 5 + 607 + 32 + 1 + 5 + 9 + 2 = 666.

It is a super-2 number, since 2×55607321592² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1815993 + ... + 1846359.

It is an arithmetic number, because the mean of its divisors is an integer number (1624782900).

Almost surely, 2^55607321592 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55607321592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77989579200).

55607321592 is an abundant number, since it is smaller than the sum of its proper divisors (100371836808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55607321592 is a wasteful number, since it uses less digits than its factorization.

55607321592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31285 (or 31278 counting only the distinct ones).

The product of its (nonzero) digits is 567000, while the sum is 45.

The spelling of 55607321592 in words is "fifty-five billion, six hundred seven million, three hundred twenty-one thousand, five hundred ninety-two".