252451357 has 4 divisors (see below), whose sum is σ = 253433916. Its totient is φ = 251468800.

The previous prime is 252451337. The next prime is 252451369. The reversal of 252451357 is 753154252.

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

It can be written as a sum of positive squares in 2 ways, for example, as 231465796 + 20985561 = 15214^2 + 4581^2 .

It is a cyclic number.

It is not a de Polignac number, because 252451357 - 2⁷ = 252451229 is a prime.

It is a super-2 number, since 2×252451357² = 127463375302282898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252451307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 490894 + ... + 491407.

It is an arithmetic number, because the mean of its divisors is an integer number (63358479).

Almost surely, 2^252451357 is an apocalyptic number.

It is an amenable number.

252451357 is a deficient number, since it is larger than the sum of its proper divisors (982559).

252451357 is an equidigital number, since it uses as much as digits as its factorization.

252451357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982558.

The product of its digits is 42000, while the sum is 34.

The square root of 252451357 is about 15888.7179155525. The cubic root of 252451357 is about 632.0128423991.

The spelling of 252451357 in words is "two hundred fifty-two million, four hundred fifty-one thousand, three hundred fifty-seven".