6451556252 has 6 divisors (see below), whose sum is σ = 11290223448. Its totient is φ = 3225778124.

The previous prime is 6451556203. The next prime is 6451556273. The reversal of 6451556252 is 2526551546.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 806444528 + ... + 806444535.

It is an arithmetic number, because the mean of its divisors is an integer number (1881703908).

Almost surely, 2^6451556252 is an apocalyptic number.

It is an amenable number.

6451556252 is a deficient number, since it is larger than the sum of its proper divisors (4838667196).

6451556252 is a wasteful number, since it uses less digits than its factorization.

6451556252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1612889067 (or 1612889065 counting only the distinct ones).

The product of its digits is 360000, while the sum is 41.

The square root of 6451556252 is about 80321.5802384390. The cubic root of 6451556252 is about 1861.6076835009.

The spelling of 6451556252 in words is "six billion, four hundred fifty-one million, five hundred fifty-six thousand, two hundred fifty-two".