52178357 has 16 divisors (see below), whose sum is σ = 65446272. Its totient is φ = 40413120.

The previous prime is 52178339. The next prime is 52178359. The reversal of 52178357 is 75387125.

It is a happy number.

It is not a de Polignac number, because 52178357 - 2¹² = 52174261 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 52178357.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52178359) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11363 + ... + 15279.

It is an arithmetic number, because the mean of its divisors is an integer number (4090392).

Almost surely, 2^52178357 is an apocalyptic number.

It is an amenable number.

52178357 is a deficient number, since it is larger than the sum of its proper divisors (13267915).

52178357 is a wasteful number, since it uses less digits than its factorization.

52178357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4108.

The product of its digits is 58800, while the sum is 38.

The square root of 52178357 is about 7223.4587975567. The cubic root of 52178357 is about 373.6773719721.

The spelling of 52178357 in words is "fifty-two million, one hundred seventy-eight thousand, three hundred fifty-seven".