51029657 has 8 divisors (see below), whose sum is σ = 58362816. Its totient is φ = 43707312.

The previous prime is 51029653. The next prime is 51029677. The reversal of 51029657 is 75692015.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51029657 - 2² = 51029653 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51029653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17498 + ... + 20204.

It is an arithmetic number, because the mean of its divisors is an integer number (7295352).

Almost surely, 2^51029657 is an apocalyptic number.

It is an amenable number.

51029657 is a deficient number, since it is larger than the sum of its proper divisors (7333159).

51029657 is a wasteful number, since it uses less digits than its factorization.

51029657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5407.

The product of its (nonzero) digits is 18900, while the sum is 35.

The square root of 51029657 is about 7143.5045320907. The cubic root of 51029657 is about 370.9148459398.

The spelling of 51029657 in words is "fifty-one million, twenty-nine thousand, six hundred fifty-seven".