55831788 has 36 divisors (see below), whose sum is σ = 144950680. Its totient is φ = 18584712.

The previous prime is 55831753. The next prime is 55831793. The reversal of 55831788 is 88713855.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

55831788 is a `hidden beast` number, since 558 + 3 + 17 + 88 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77293 + ... + 78011.

Almost surely, 2^55831788 is an apocalyptic number.

It is an amenable number.

55831788 is an abundant number, since it is smaller than the sum of its proper divisors (89118892).

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

55831788 is an equidigital number, since it uses as much as digits as its factorization.

55831788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1451 (or 724 counting only the distinct ones).

The product of its digits is 268800, while the sum is 45.

The square root of 55831788 is about 7472.0671838521. The cubic root of 55831788 is about 382.2027833368.

The spelling of 55831788 in words is "fifty-five million, eight hundred thirty-one thousand, seven hundred eighty-eight".