52857251 has 4 divisors (see below), whose sum is σ = 53351352. Its totient is φ = 52363152.

The previous prime is 52857247. The next prime is 52857253. The reversal of 52857251 is 15275825.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 52857251 - 2² = 52857247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52857253) 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, 246890 + ... + 247103.

It is an arithmetic number, because the mean of its divisors is an integer number (13337838).

Almost surely, 2^52857251 is an apocalyptic number.

52857251 is a deficient number, since it is larger than the sum of its proper divisors (494101).

52857251 is a wasteful number, since it uses less digits than its factorization.

52857251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494100.

The product of its digits is 28000, while the sum is 35.

The square root of 52857251 is about 7270.2992373079. The cubic root of 52857251 is about 375.2910356998.

The spelling of 52857251 in words is "fifty-two million, eight hundred fifty-seven thousand, two hundred fifty-one".