251001130 has 16 divisors (see below), whose sum is σ = 457246944. Its totient is φ = 99190480.

The previous prime is 251001089. The next prime is 251001181. The reversal of 251001130 is 31100152.

It is a super-2 number, since 2×251001130² = 126003134522553800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 251001130.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150376 + ... + 152035.

It is an arithmetic number, because the mean of its divisors is an integer number (28577934).

Almost surely, 2^251001130 is an apocalyptic number.

251001130 is a deficient number, since it is larger than the sum of its proper divisors (206245814).

251001130 is a wasteful number, since it uses less digits than its factorization.

251001130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302501.

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 251001130 is about 15843.0151801985. The cubic root of 251001130 is about 630.8003014828.

Adding to 251001130 its reverse (31100152), we get a palindrome (282101282).

The spelling of 251001130 in words is "two hundred fifty-one million, one thousand, one hundred thirty".