55662197 has 4 divisors (see below), whose sum is σ = 55781856. Its totient is φ = 55542540.

The previous prime is 55662169. The next prime is 55662203. The reversal of 55662197 is 79126655.

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: 79126655 = 5 ⋅15825331.

It is a cyclic number.

It is not a de Polignac number, because 55662197 - 2¹⁶ = 55596661 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 (55662157) 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, 59129 + ... + 60062.

It is an arithmetic number, because the mean of its divisors is an integer number (13945464).

Almost surely, 2^55662197 is an apocalyptic number.

It is an amenable number.

55662197 is a deficient number, since it is larger than the sum of its proper divisors (119659).

55662197 is a wasteful number, since it uses less digits than its factorization.

55662197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119658.

The product of its digits is 113400, while the sum is 41.

The square root of 55662197 is about 7460.7102208838. The cubic root of 55662197 is about 381.8154060937.

The spelling of 55662197 in words is "fifty-five million, six hundred sixty-two thousand, one hundred ninety-seven".