55867520 has 32 divisors (see below), whose sum is σ = 133559820. Its totient is φ = 22346752.

The previous prime is 55867519. The next prime is 55867547. The reversal of 55867520 is 2576855.

It can be written as a sum of positive squares in 2 ways, for example, as 53816896 + 2050624 = 7336^2 + 1432^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43007 + ... + 44286.

Almost surely, 2^55867520 is an apocalyptic number.

It is an amenable number.

55867520 is an abundant number, since it is smaller than the sum of its proper divisors (77692300).

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

55867520 is an equidigital number, since it uses as much as digits as its factorization.

55867520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87312 (or 87300 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 38.

The square root of 55867520 is about 7474.4578398704. The cubic root of 55867520 is about 382.2843017569.

The spelling of 55867520 in words is "fifty-five million, eight hundred sixty-seven thousand, five hundred twenty".