251140002 has 16 divisors (see below), whose sum is σ = 509161440. Its totient is φ = 82566432.

The previous prime is 251139983. The next prime is 251140009. The reversal of 251140002 is 200041152.

It is not an unprimeable number, because it can be changed into a prime (251140009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 286252 + ... + 287127.

It is an arithmetic number, because the mean of its divisors is an integer number (31822590).

Almost surely, 2^251140002 is an apocalyptic number.

251140002 is an abundant number, since it is smaller than the sum of its proper divisors (258021438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

251140002 is a wasteful number, since it uses less digits than its factorization.

251140002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573457.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 251140002 is about 15847.3973257441. The cubic root of 251140002 is about 630.9166148354.

Adding to 251140002 its reverse (200041152), we get a palindrome (451181154).

The spelling of 251140002 in words is "two hundred fifty-one million, one hundred forty thousand, two".