51292693 has 16 divisors (see below), whose sum is σ = 54895104. Its totient is φ = 47839680.

The previous prime is 51292687. The next prime is 51292699. The reversal of 51292693 is 39629215.

It is an interprime number because it is at equal distance from previous prime (51292687) and next prime (51292699).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51292693 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51292699) 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, 225846 + ... + 226072.

It is an arithmetic number, because the mean of its divisors is an integer number (3430944).

Almost surely, 2^51292693 is an apocalyptic number.

It is an amenable number.

51292693 is a deficient number, since it is larger than the sum of its proper divisors (3602411).

51292693 is a wasteful number, since it uses less digits than its factorization.

51292693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492.

The product of its digits is 29160, while the sum is 37.

The square root of 51292693 is about 7161.8917193714. The cubic root of 51292693 is about 371.5510563848.

The spelling of 51292693 in words is "fifty-one million, two hundred ninety-two thousand, six hundred ninety-three".