55670997 has 4 divisors (see below), whose sum is σ = 74228000. Its totient is φ = 37113996.

The previous prime is 55670963. The next prime is 55671001. The reversal of 55670997 is 79907655.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 55670997 - 2⁶ = 55670933 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 (55670917) 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, 9278497 + ... + 9278502.

It is an arithmetic number, because the mean of its divisors is an integer number (18557000).

Almost surely, 2^55670997 is an apocalyptic number.

It is an amenable number.

55670997 is a deficient number, since it is larger than the sum of its proper divisors (18557003).

55670997 is a wasteful number, since it uses less digits than its factorization.

55670997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18557002.

The product of its (nonzero) digits is 595350, while the sum is 48.

The square root of 55670997 is about 7461.2999537614. The cubic root of 55670997 is about 381.8355262632.

The spelling of 55670997 in words is "fifty-five million, six hundred seventy thousand, nine hundred ninety-seven".