55715340 has 48 divisors (see below), whose sum is σ = 160225632. Its totient is φ = 14455296.

The previous prime is 55715323. The next prime is 55715389. The reversal of 55715340 is 4351755.

55715340 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×55715340² = 6208398222631200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

55715340 is strictly pandigital in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 55715298 and 55715307.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10329 + ... + 14768.

It is an arithmetic number, because the mean of its divisors is an integer number (3338034).

Almost surely, 2^55715340 is an apocalyptic number.

It is an amenable number.

55715340 is an abundant number, since it is smaller than the sum of its proper divisors (104510292).

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

55715340 is a wasteful number, since it uses less digits than its factorization.

55715340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25146 (or 25144 counting only the distinct ones).

The product of its (nonzero) digits is 10500, while the sum is 30.

The square root of 55715340 is about 7464.2708954057. The cubic root of 55715340 is about 381.9368790930.

The spelling of 55715340 in words is "fifty-five million, seven hundred fifteen thousand, three hundred forty".