55867940 has 24 divisors (see below), whose sum is σ = 117652920. Its totient is φ = 22284288.

The previous prime is 55867937. The next prime is 55867951. The reversal of 55867940 is 4976855.

It can be written as a sum of positive squares in 4 ways, for example, as 6390784 + 49477156 = 2528^2 + 7034^2 .

It is a junction number, because it is equal to n+sod(n) for n = 55867891 and 55867900.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3716 + ... + 11204.

It is an arithmetic number, because the mean of its divisors is an integer number (4902205).

Almost surely, 2^55867940 is an apocalyptic number.

It is an amenable number.

55867940 is an abundant number, since it is smaller than the sum of its proper divisors (61784980).

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

55867940 is a wasteful number, since it uses less digits than its factorization.

55867940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7871 (or 7869 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 44.

The square root of 55867940 is about 7474.4859355008. The cubic root of 55867940 is about 382.2852597315.

The spelling of 55867940 in words is "fifty-five million, eight hundred sixty-seven thousand, nine hundred forty".