252996479 has 4 divisors (see below), whose sum is σ = 253047840. Its totient is φ = 252945120.

The previous prime is 252996451. The next prime is 252996509. The reversal of 252996479 is 974699252.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252996479 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 252996479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252996409) 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, 17402 + ... + 28439.

It is an arithmetic number, because the mean of its divisors is an integer number (63261960).

Almost surely, 2^252996479 is an apocalyptic number.

252996479 is a deficient number, since it is larger than the sum of its proper divisors (51361).

252996479 is an equidigital number, since it uses as much as digits as its factorization.

252996479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51360.

The product of its digits is 2449440, while the sum is 53.

The square root of 252996479 is about 15905.8630385151. The cubic root of 252996479 is about 632.4674202990.

The spelling of 252996479 in words is "two hundred fifty-two million, nine hundred ninety-six thousand, four hundred seventy-nine".