252184739 has 4 divisors (see below), whose sum is σ = 265457640. Its totient is φ = 238911840.

The previous prime is 252184733. The next prime is 252184753. The reversal of 252184739 is 937481252.

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-252184739 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 252184696 and 252184705.

It is not an unprimeable number, because it can be changed into a prime (252184733) 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, 6636422 + ... + 6636459.

It is an arithmetic number, because the mean of its divisors is an integer number (66364410).

Almost surely, 2^252184739 is an apocalyptic number.

252184739 is a deficient number, since it is larger than the sum of its proper divisors (13272901).

252184739 is a wasteful number, since it uses less digits than its factorization.

252184739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13272900.

The product of its digits is 120960, while the sum is 41.

The square root of 252184739 is about 15880.3255319279. The cubic root of 252184739 is about 631.7902709996.

The spelling of 252184739 in words is "two hundred fifty-two million, one hundred eighty-four thousand, seven hundred thirty-nine".