55661592 has 32 divisors (see below), whose sum is σ = 159033600. Its totient is φ = 15903264.

The previous prime is 55661591. The next prime is 55661597. The reversal of 55661592 is 29516655.

It is a self number, because there is not a number n which added to its sum of digits gives 55661592.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55661591) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165492 + ... + 165827.

It is an arithmetic number, because the mean of its divisors is an integer number (4969800).

Almost surely, 2^55661592 is an apocalyptic number.

It is an amenable number.

55661592 is an abundant number, since it is smaller than the sum of its proper divisors (103372008).

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

55661592 is a wasteful number, since it uses less digits than its factorization.

55661592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331335 (or 331331 counting only the distinct ones).

The product of its digits is 81000, while the sum is 39.

The square root of 55661592 is about 7460.6696750359. The cubic root of 55661592 is about 381.8140227541.

The spelling of 55661592 in words is "fifty-five million, six hundred sixty-one thousand, five hundred ninety-two".