651255136 has 24 divisors (see below), whose sum is σ = 1465324560. Its totient is φ = 279109248.

The previous prime is 651255133. The next prime is 651255151. The reversal of 651255136 is 631552156.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (651255131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1453471 + ... + 1453918.

It is an arithmetic number, because the mean of its divisors is an integer number (61055190).

Almost surely, 2^651255136 is an apocalyptic number.

It is an amenable number.

651255136 is an abundant number, since it is smaller than the sum of its proper divisors (814069424).

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

651255136 is a wasteful number, since it uses less digits than its factorization.

651255136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2907406 (or 2907398 counting only the distinct ones).

The product of its digits is 27000, while the sum is 34.

The square root of 651255136 is about 25519.7009386866. The cubic root of 651255136 is about 866.7963098630.

The spelling of 651255136 in words is "six hundred fifty-one million, two hundred fifty-five thousand, one hundred thirty-six".