55815192 has 48 divisors (see below), whose sum is σ = 151515000. Its totient is φ = 18562176.

The previous prime is 55815191. The next prime is 55815211. The reversal of 55815192 is 29151855.

It is a happy number.

55815192 is a `hidden beast` number, since 558 + 15 + 1 + 92 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

55815192 is a Rhonda number in base 10.

Its product of digits (18000) is a multiple of the sum of its prime factors (1800).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55815191) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52684 + ... + 53732.

Almost surely, 2^55815192 is an apocalyptic number.

It is an amenable number.

55815192 is an abundant number, since it is smaller than the sum of its proper divisors (95699808).

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

55815192 is a wasteful number, since it uses less digits than its factorization.

55815192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1800 (or 1793 counting only the distinct ones).

The product of its digits is 18000, while the sum is 36.

The square root of 55815192 is about 7470.9565652599. The cubic root of 55815192 is about 382.1649096558.

The spelling of 55815192 in words is "fifty-five million, eight hundred fifteen thousand, one hundred ninety-two".