55713197 has 2 divisors, whose sum is σ = 55713198. Its totient is φ = 55713196.

The previous prime is 55713193. The next prime is 55713221. The reversal of 55713197 is 79131755.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44009956 + 11703241 = 6634^2 + 3421^2 .

It is a cyclic number.

It is not a de Polignac number, because 55713197 - 2² = 55713193 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55713197.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55713193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27856598 + 27856599.

It is an arithmetic number, because the mean of its divisors is an integer number (27856599).

Almost surely, 2^55713197 is an apocalyptic number.

It is an amenable number.

55713197 is a deficient number, since it is larger than the sum of its proper divisors (1).

55713197 is an equidigital number, since it uses as much as digits as its factorization.

55713197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 33075, while the sum is 38.

The square root of 55713197 is about 7464.1273435010. The cubic root of 55713197 is about 381.9319821698.

The spelling of 55713197 in words is "fifty-five million, seven hundred thirteen thousand, one hundred ninety-seven".