251936022 has 32 divisors (see below), whose sum is σ = 574553952. Its totient is φ = 72958464.

The previous prime is 251936017. The next prime is 251936023. The reversal of 251936022 is 220639152.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251936023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93673 + ... + 96324.

It is an arithmetic number, because the mean of its divisors is an integer number (17954811).

Almost surely, 2^251936022 is an apocalyptic number.

251936022 is an abundant number, since it is smaller than the sum of its proper divisors (322617930).

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

251936022 is a wasteful number, since it uses less digits than its factorization.

251936022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190032.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 251936022 is about 15872.4926208835. The cubic root of 251936022 is about 631.5825017951.

The spelling of 251936022 in words is "two hundred fifty-one million, nine hundred thirty-six thousand, twenty-two".