52072857 has 6 divisors (see below), whose sum is σ = 75216362. Its totient is φ = 34715232.

The previous prime is 52072847. The next prime is 52072859. The reversal of 52072857 is 75827025.

It can be written as a sum of positive squares in only one way, i.e., 50424201 + 1648656 = 7101^2 + 1284^2 .

It is not a de Polignac number, because 52072857 - 2⁶ = 52072793 is a prime.

It is a super-3 number, since 3×52072857³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52072859) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2892928 + ... + 2892945.

Almost surely, 2^52072857 is an apocalyptic number.

It is an amenable number.

52072857 is a deficient number, since it is larger than the sum of its proper divisors (23143505).

52072857 is a wasteful number, since it uses less digits than its factorization.

52072857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5785879 (or 5785876 counting only the distinct ones).

The product of its (nonzero) digits is 39200, while the sum is 36.

The square root of 52072857 is about 7216.1525067033. The cubic root of 52072857 is about 373.4253545661.

The spelling of 52072857 in words is "fifty-two million, seventy-two thousand, eight hundred fifty-seven".