55706197 has 4 divisors (see below), whose sum is σ = 56377440. Its totient is φ = 55034956.

The previous prime is 55706191. The next prime is 55706243. The reversal of 55706197 is 79160755.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55706197 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55706191) 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, 335497 + ... + 335662.

It is an arithmetic number, because the mean of its divisors is an integer number (14094360).

Almost surely, 2^55706197 is an apocalyptic number.

It is an amenable number.

55706197 is a deficient number, since it is larger than the sum of its proper divisors (671243).

55706197 is an equidigital number, since it uses as much as digits as its factorization.

55706197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671242.

The product of its (nonzero) digits is 66150, while the sum is 40.

The square root of 55706197 is about 7463.6584193008. The cubic root of 55706197 is about 381.9159857453.

The spelling of 55706197 in words is "fifty-five million, seven hundred six thousand, one hundred ninety-seven".