51047057 has 8 divisors (see below), whose sum is σ = 52204992. Its totient is φ = 49899600.

The previous prime is 51047023. The next prime is 51047071. The reversal of 51047057 is 75074015.

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

It is not a de Polignac number, because 51047057 - 2⁶ = 51046993 is a prime.

It is a super-2 number, since 2×51047057² = 5211604056722498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51049057) 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, 7682 + ... + 12692.

It is an arithmetic number, because the mean of its divisors is an integer number (6525624).

Almost surely, 2^51047057 is an apocalyptic number.

It is an amenable number.

51047057 is a deficient number, since it is larger than the sum of its proper divisors (1157935).

51047057 is a wasteful number, since it uses less digits than its factorization.

51047057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5239.

The product of its (nonzero) digits is 4900, while the sum is 29.

The square root of 51047057 is about 7144.7223179071. The cubic root of 51047057 is about 370.9569991065.

The spelling of 51047057 in words is "fifty-one million, forty-seven thousand, fifty-seven".