651157254 has 24 divisors (see below), whose sum is σ = 1539099432. Its totient is φ = 197320320.

The previous prime is 651157237. The next prime is 651157261. The reversal of 651157254 is 452751156.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1644139 + ... + 1644534.

It is an arithmetic number, because the mean of its divisors is an integer number (64129143).

Almost surely, 2^651157254 is an apocalyptic number.

651157254 is an abundant number, since it is smaller than the sum of its proper divisors (887942178).

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

651157254 is a wasteful number, since it uses less digits than its factorization.

651157254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3288692 (or 3288689 counting only the distinct ones).

The product of its digits is 42000, while the sum is 36.

The square root of 651157254 is about 25517.7830933645. The cubic root of 651157254 is about 866.7528819228.

The spelling of 651157254 in words is "six hundred fifty-one million, one hundred fifty-seven thousand, two hundred fifty-four".