55793840 has 20 divisors (see below), whose sum is σ = 129720864. Its totient is φ = 22317504.

The previous prime is 55793819. The next prime is 55793849. The reversal of 55793840 is 4839755.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×55793840² = 6225905163891200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55793849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 348632 + ... + 348791.

Almost surely, 2^55793840 is an apocalyptic number.

It is an amenable number.

55793840 is an abundant number, since it is smaller than the sum of its proper divisors (73927024).

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

55793840 is a wasteful number, since it uses less digits than its factorization.

55793840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697436 (or 697430 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 41.

The square root of 55793840 is about 7469.5274281577. The cubic root of 55793840 is about 382.1161712770.

The spelling of 55793840 in words is "fifty-five million, seven hundred ninety-three thousand, eight hundred forty".