55402507 has 16 divisors (see below), whose sum is σ = 60046272. Its totient is φ = 50928640.

The previous prime is 55402483. The next prime is 55402511. The reversal of 55402507 is 70520455.

It is a cyclic number.

It is not a de Polignac number, because 55402507 - 2⁷ = 55402379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55402007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 237663 + ... + 237895.

It is an arithmetic number, because the mean of its divisors is an integer number (3752892).

Almost surely, 2^55402507 is an apocalyptic number.

55402507 is a deficient number, since it is larger than the sum of its proper divisors (4643765).

55402507 is a wasteful number, since it uses less digits than its factorization.

55402507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518.

The product of its (nonzero) digits is 7000, while the sum is 28.

The square root of 55402507 is about 7443.2860350789. The cubic root of 55402507 is about 381.2206982049.

The spelling of 55402507 in words is "fifty-five million, four hundred two thousand, five hundred seven".