52178197 has 2 divisors, whose sum is σ = 52178198. Its totient is φ = 52178196.

The previous prime is 52178183. The next prime is 52178207. The reversal of 52178197 is 79187125.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28451556 + 23726641 = 5334^2 + 4871^2 .

It is a cyclic number.

It is not a de Polignac number, because 52178197 - 2²³ = 43789589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52170197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26089098 + 26089099.

It is an arithmetic number, because the mean of its divisors is an integer number (26089099).

Almost surely, 2^52178197 is an apocalyptic number.

It is an amenable number.

52178197 is a deficient number, since it is larger than the sum of its proper divisors (1).

52178197 is an equidigital number, since it uses as much as digits as its factorization.

52178197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35280, while the sum is 40.

The square root of 52178197 is about 7223.4477225214. The cubic root of 52178197 is about 373.6769900229.

The spelling of 52178197 in words is "fifty-two million, one hundred seventy-eight thousand, one hundred ninety-seven".