251222054 has 32 divisors (see below), whose sum is σ = 404075520. Its totient is φ = 116880192.

The previous prime is 251222053. The next prime is 251222057. The reversal of 251222054 is 450222152.

It is a super-2 number, since 2×251222054² = 126225040831957832, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251222051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 264809 + ... + 265755.

It is an arithmetic number, because the mean of its divisors is an integer number (12627360).

Almost surely, 2^251222054 is an apocalyptic number.

251222054 is a deficient number, since it is larger than the sum of its proper divisors (152853466).

251222054 is a wasteful number, since it uses less digits than its factorization.

251222054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1124.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 251222054 is about 15849.9859305931. The cubic root of 251222054 is about 630.9853179928.

The spelling of 251222054 in words is "two hundred fifty-one million, two hundred twenty-two thousand, fifty-four".