55392897 has 32 divisors (see below), whose sum is σ = 86821632. Its totient is φ = 30760704.

The previous prime is 55392893. The next prime is 55392949. The reversal of 55392897 is 79829355.

It is a happy number.

It is not a de Polignac number, because 55392897 - 2² = 55392893 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55392893) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 174583 + ... + 174899.

It is an arithmetic number, because the mean of its divisors is an integer number (2713176).

Almost surely, 2^55392897 is an apocalyptic number.

It is an amenable number.

55392897 is a deficient number, since it is larger than the sum of its proper divisors (31428735).

55392897 is a wasteful number, since it uses less digits than its factorization.

55392897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537.

The product of its digits is 680400, while the sum is 48.

The square root of 55392897 is about 7442.6404588694. The cubic root of 55392897 is about 381.1986550222.

The spelling of 55392897 in words is "fifty-five million, three hundred ninety-two thousand, eight hundred ninety-seven".