651142252 has 12 divisors (see below), whose sum is σ = 1139927040. Its totient is φ = 325448816.

The previous prime is 651142237. The next prime is 651142319. The reversal of 651142252 is 252241156.

It is a self number, because there is not a number n which added to its sum of digits gives 651142252.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18028 + ... + 40339.

It is an arithmetic number, because the mean of its divisors is an integer number (94993920).

Almost surely, 2^651142252 is an apocalyptic number.

It is an amenable number.

651142252 is a deficient number, since it is larger than the sum of its proper divisors (488784788).

651142252 is a wasteful number, since it uses less digits than its factorization.

651142252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61160 (or 61158 counting only the distinct ones).

The product of its digits is 4800, while the sum is 28.

The square root of 651142252 is about 25517.4891398037. The cubic root of 651142252 is about 866.7462255037.

The spelling of 651142252 in words is "six hundred fifty-one million, one hundred forty-two thousand, two hundred fifty-two".