51607907 has 16 divisors (see below), whose sum is σ = 57805440. Its totient is φ = 45747072.

The previous prime is 51607873. The next prime is 51607909. The reversal of 51607907 is 70970615.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51607907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51607909) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138173 + ... + 138545.

It is an arithmetic number, because the mean of its divisors is an integer number (3612840).

Almost surely, 2^51607907 is an apocalyptic number.

51607907 is a deficient number, since it is larger than the sum of its proper divisors (6197533).

51607907 is a wasteful number, since it uses less digits than its factorization.

51607907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782.

The product of its (nonzero) digits is 13230, while the sum is 35.

The square root of 51607907 is about 7183.8643500556. The cubic root of 51607907 is about 372.3106122538.

The spelling of 51607907 in words is "fifty-one million, six hundred seven thousand, nine hundred seven".