251055345 has 16 divisors (see below), whose sum is σ = 402630912. Its totient is φ = 133582080.

The previous prime is 251055331. The next prime is 251055347. The reversal of 251055345 is 543550152.

It is a happy number.

It is not a de Polignac number, because 251055345 - 2⁵ = 251055313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (251055347) 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, 12952 + ... + 25881.

It is an arithmetic number, because the mean of its divisors is an integer number (25164432).

Almost surely, 2^251055345 is an apocalyptic number.

It is an amenable number.

251055345 is a deficient number, since it is larger than the sum of its proper divisors (151575567).

251055345 is a wasteful number, since it uses less digits than its factorization.

251055345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39272.

The product of its (nonzero) digits is 15000, while the sum is 30.

The square root of 251055345 is about 15844.7260941930. The cubic root of 251055345 is about 630.8457147928.

The spelling of 251055345 in words is "two hundred fifty-one million, fifty-five thousand, three hundred forty-five".