55379657 has 4 divisors (see below), whose sum is σ = 56667600. Its totient is φ = 54091716.

The previous prime is 55379641. The next prime is 55379707. The reversal of 55379657 is 75697355.

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, and also an emirpimes, since its reverse is a distinct semiprime: 75697355 = 5 ⋅15139471.

It is a cyclic number.

It is not a de Polignac number, because 55379657 - 2⁴ = 55379641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55379057) 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, 643907 + ... + 643992.

It is an arithmetic number, because the mean of its divisors is an integer number (14166900).

Almost surely, 2^55379657 is an apocalyptic number.

It is an amenable number.

55379657 is a deficient number, since it is larger than the sum of its proper divisors (1287943).

55379657 is a wasteful number, since it uses less digits than its factorization.

55379657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1287942.

The product of its digits is 992250, while the sum is 47.

The square root of 55379657 is about 7441.7509364396. The cubic root of 55379657 is about 381.1682812580.

The spelling of 55379657 in words is "fifty-five million, three hundred seventy-nine thousand, six hundred fifty-seven".