55607940 has 36 divisors (see below), whose sum is σ = 168677964. Its totient is φ = 14828736.

The previous prime is 55607917. The next prime is 55607941. The reversal of 55607940 is 4970655.

55607940 is a `hidden beast` number, since 5 + 5 + 607 + 9 + 40 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 10771524 + 44836416 = 3282^2 + 6696^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 55607895 and 55607904.

It is not an unprimeable number, because it can be changed into a prime (55607941) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 154287 + ... + 154646.

It is an arithmetic number, because the mean of its divisors is an integer number (4685499).

Almost surely, 2^55607940 is an apocalyptic number.

It is an amenable number.

55607940 is an abundant number, since it is smaller than the sum of its proper divisors (113070024).

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

55607940 is a wasteful number, since it uses less digits than its factorization.

55607940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308948 (or 308943 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 55607940 is about 7457.0731523836. The cubic root of 55607940 is about 381.6913069485.

The spelling of 55607940 in words is "fifty-five million, six hundred seven thousand, nine hundred forty".