55492207 has 4 divisors (see below), whose sum is σ = 56194720. Its totient is φ = 54789696.

The previous prime is 55492187. The next prime is 55492243. The reversal of 55492207 is 70229455.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55492207 - 2²³ = 47103599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55492277) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 351138 + ... + 351295.

It is an arithmetic number, because the mean of its divisors is an integer number (14048680).

Almost surely, 2^55492207 is an apocalyptic number.

55492207 is a deficient number, since it is larger than the sum of its proper divisors (702513).

55492207 is an equidigital number, since it uses as much as digits as its factorization.

55492207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702512.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 55492207 is about 7449.3091626002. The cubic root of 55492207 is about 381.4263270365.

The spelling of 55492207 in words is "fifty-five million, four hundred ninety-two thousand, two hundred seven".