252051407 has 4 divisors (see below), whose sum is σ = 255504240. Its totient is φ = 248598576.

The previous prime is 252051389. The next prime is 252051433. The reversal of 252051407 is 704150252.

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 252051407 - 2¹⁴ = 252035023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252051497) 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, 1726307 + ... + 1726452.

It is an arithmetic number, because the mean of its divisors is an integer number (63876060).

Almost surely, 2^252051407 is an apocalyptic number.

252051407 is a deficient number, since it is larger than the sum of its proper divisors (3452833).

252051407 is an equidigital number, since it uses as much as digits as its factorization.

252051407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3452832.

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 252051407 is about 15876.1269521253. The cubic root of 252051407 is about 631.6789072552.

The spelling of 252051407 in words is "two hundred fifty-two million, fifty-one thousand, four hundred seven".