51313577 has 16 divisors (see below), whose sum is σ = 60352512. Its totient is φ = 42714000.

The previous prime is 51313571. The next prime is 51313597. The reversal of 51313577 is 77531315.

It is not a de Polignac number, because 51313577 - 2⁶ = 51313513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51313571) 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, 67952 + ... + 68702.

It is an arithmetic number, because the mean of its divisors is an integer number (3772032).

Almost surely, 2^51313577 is an apocalyptic number.

It is an amenable number.

51313577 is a deficient number, since it is larger than the sum of its proper divisors (9038935).

51313577 is a wasteful number, since it uses less digits than its factorization.

51313577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1028.

The product of its digits is 11025, while the sum is 32.

The square root of 51313577 is about 7163.3495656711. The cubic root of 51313577 is about 371.6014756483.

The spelling of 51313577 in words is "fifty-one million, three hundred thirteen thousand, five hundred seventy-seven".