251161412 has 12 divisors (see below), whose sum is σ = 439744620. Its totient is φ = 125520096.

The previous prime is 251161387. The next prime is 251161429. The reversal of 251161412 is 214161152.

It can be written as a sum of positive squares in 2 ways, for example, as 112487236 + 138674176 = 10606^2 + 11776^2 .

It is a super-3 number, since 3×251161412³ (a number of 26 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5087 + ... + 22982.

It is an arithmetic number, because the mean of its divisors is an integer number (36645385).

Almost surely, 2^251161412 is an apocalyptic number.

It is an amenable number.

251161412 is a deficient number, since it is larger than the sum of its proper divisors (188583208).

251161412 is a wasteful number, since it uses less digits than its factorization.

251161412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30310 (or 30308 counting only the distinct ones).

The product of its digits is 480, while the sum is 23.

The square root of 251161412 is about 15848.0728165919. The cubic root of 251161412 is about 630.9345431367.

The spelling of 251161412 in words is "two hundred fifty-one million, one hundred sixty-one thousand, four hundred twelve".