252857147 has 4 divisors (see below), whose sum is σ = 263850960. Its totient is φ = 241863336.

The previous prime is 252857123. The next prime is 252857153. The reversal of 252857147 is 741758252.

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 252857147 - 2⁶ = 252857083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252857047) 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, 5496872 + ... + 5496917.

It is an arithmetic number, because the mean of its divisors is an integer number (65962740).

Almost surely, 2^252857147 is an apocalyptic number.

252857147 is a deficient number, since it is larger than the sum of its proper divisors (10993813).

252857147 is a wasteful number, since it uses less digits than its factorization.

252857147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10993812.

The product of its digits is 156800, while the sum is 41.

The square root of 252857147 is about 15901.4825409457. The cubic root of 252857147 is about 632.3512933432.

The spelling of 252857147 in words is "two hundred fifty-two million, eight hundred fifty-seven thousand, one hundred forty-seven".