51057747 has 24 divisors (see below), whose sum is σ = 79895088. Its totient is φ = 31233600.

The previous prime is 51057739. The next prime is 51057757. The reversal of 51057747 is 74775015.

It is not a de Polignac number, because 51057747 - 2³ = 51057739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51057707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19972 + ... + 22382.

It is an arithmetic number, because the mean of its divisors is an integer number (3328962).

Almost surely, 2^51057747 is an apocalyptic number.

51057747 is a deficient number, since it is larger than the sum of its proper divisors (28837341).

51057747 is a wasteful number, since it uses less digits than its factorization.

51057747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2611 (or 2608 counting only the distinct ones).

The product of its (nonzero) digits is 34300, while the sum is 36.

The square root of 51057747 is about 7145.4703833967. The cubic root of 51057747 is about 370.9828919054.

The spelling of 51057747 in words is "fifty-one million, fifty-seven thousand, seven hundred forty-seven".