251552046 has 16 divisors (see below), whose sum is σ = 511632000. Its totient is φ = 82429368.

The previous prime is 251552033. The next prime is 251552047. The reversal of 251552046 is 640255152.

It is a super-2 number, since 2×251552046² = 126556863693572232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251552047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 354946 + ... + 355653.

It is an arithmetic number, because the mean of its divisors is an integer number (31977000).

Almost surely, 2^251552046 is an apocalyptic number.

251552046 is an abundant number, since it is smaller than the sum of its proper divisors (260079954).

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

251552046 is a wasteful number, since it uses less digits than its factorization.

251552046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710663.

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 251552046 is about 15860.3923658906. The cubic root of 251552046 is about 631.2614734248.

The spelling of 251552046 in words is "two hundred fifty-one million, five hundred fifty-two thousand, forty-six".