251045122 has 8 divisors (see below), whose sum is σ = 378144000. Its totient is φ = 124997124.

The previous prime is 251045087. The next prime is 251045129. The reversal of 251045122 is 221540152.

251045122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 251045093 and 251045102.

It is not an unprimeable number, because it can be changed into a prime (251045129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 262122 + ... + 263077.

It is an arithmetic number, because the mean of its divisors is an integer number (47268000).

Almost surely, 2^251045122 is an apocalyptic number.

251045122 is a deficient number, since it is larger than the sum of its proper divisors (127098878).

251045122 is a wasteful number, since it uses less digits than its factorization.

251045122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525440.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 251045122 is about 15844.4034914540. The cubic root of 251045122 is about 630.8371519753.

Adding to 251045122 its reverse (221540152), we get a palindrome (472585274).

The spelling of 251045122 in words is "two hundred fifty-one million, forty-five thousand, one hundred twenty-two".