651140250 has 64 divisors (see below), whose sum is σ = 1641219840. Its totient is φ = 171931200.

The previous prime is 651140227. The next prime is 651140257. The reversal of 651140250 is 52041156.

It is a self number, because there is not a number n which added to its sum of digits gives 651140250.

It is not an unprimeable number, because it can be changed into a prime (651140257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 73036 + ... + 81464.

It is an arithmetic number, because the mean of its divisors is an integer number (25644060).

Almost surely, 2^651140250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 651140250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (820609920).

651140250 is an abundant number, since it is smaller than the sum of its proper divisors (990079590).

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

651140250 is a wasteful number, since it uses less digits than its factorization.

651140250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8552 (or 8542 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 651140250 is about 25517.4499117761. The cubic root of 651140250 is about 866.7453372044.

The spelling of 651140250 in words is "six hundred fifty-one million, one hundred forty thousand, two hundred fifty".