55564860 has 48 divisors (see below), whose sum is σ = 167551776. Its totient is φ = 13677312.

The previous prime is 55564853. The next prime is 55564867. The reversal of 55564860 is 6846555.

It is an interprime number because it is at equal distance from previous prime (55564853) and next prime (55564867).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55564867) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34839 + ... + 36398.

It is an arithmetic number, because the mean of its divisors is an integer number (3490662).

Almost surely, 2^55564860 is an apocalyptic number.

It is an amenable number.

55564860 is an abundant number, since it is smaller than the sum of its proper divisors (111986916).

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

55564860 is a wasteful number, since it uses less digits than its factorization.

55564860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71262 (or 71260 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 39.

The square root of 55564860 is about 7454.1840599760. The cubic root of 55564860 is about 381.5927148555.

The spelling of 55564860 in words is "fifty-five million, five hundred sixty-four thousand, eight hundred sixty".