51917601 has 16 divisors (see below), whose sum is σ = 72987264. Its totient is φ = 32761344.

The previous prime is 51917599. The next prime is 51917611. The reversal of 51917601 is 10671915.

It is not a de Polignac number, because 51917601 - 2¹ = 51917599 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51917611) 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, 2815 + ... + 10571.

It is an arithmetic number, because the mean of its divisors is an integer number (4561704).

Almost surely, 2^51917601 is an apocalyptic number.

It is an amenable number.

51917601 is a deficient number, since it is larger than the sum of its proper divisors (21069663).

51917601 is a wasteful number, since it uses less digits than its factorization.

51917601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7880.

The product of its (nonzero) digits is 1890, while the sum is 30.

The square root of 51917601 is about 7205.3869431142. The cubic root of 51917601 is about 373.0538606944.

The spelling of 51917601 in words is "fifty-one million, nine hundred seventeen thousand, six hundred one".