251057046 has 16 divisors (see below), whose sum is σ = 505948608. Its totient is φ = 83046600.

The previous prime is 251057039. The next prime is 251057057. The reversal of 251057046 is 640750152.

It is a super-2 number, since 2×251057046² = 126059280692492232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158920 + ... + 160491.

It is an arithmetic number, because the mean of its divisors is an integer number (31621788).

Almost surely, 2^251057046 is an apocalyptic number.

251057046 is an abundant number, since it is smaller than the sum of its proper divisors (254891562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

251057046 is a wasteful number, since it uses less digits than its factorization.

251057046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319547.

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 251057046 is about 15844.7797712685. The cubic root of 251057046 is about 630.8471395333.

The spelling of 251057046 in words is "two hundred fifty-one million, fifty-seven thousand, forty-six".