252612406 has 4 divisors (see below), whose sum is σ = 378918612. Its totient is φ = 126306202.

The previous prime is 252612377. The next prime is 252612421. The reversal of 252612406 is 604216252.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63153100 + ... + 63153103.

It is an arithmetic number, because the mean of its divisors is an integer number (94729653).

Almost surely, 2^252612406 is an apocalyptic number.

252612406 is a deficient number, since it is larger than the sum of its proper divisors (126306206).

252612406 is a wasteful number, since it uses less digits than its factorization.

252612406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126306205.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 252612406 is about 15893.7851375939. The cubic root of 252612406 is about 632.1472094060.

Adding to 252612406 its reverse (604216252), we get a palindrome (856828658).

The spelling of 252612406 in words is "two hundred fifty-two million, six hundred twelve thousand, four hundred six".