51757042 has 16 divisors (see below), whose sum is σ = 81504000. Its totient is φ = 24617520.

The previous prime is 51757039. The next prime is 51757063. The reversal of 51757042 is 24075715.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a junction number, because it is equal to n+sod(n) for n = 51756995 and 51757013.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3417 + ... + 10732.

It is an arithmetic number, because the mean of its divisors is an integer number (5094000).

Almost surely, 2^51757042 is an apocalyptic number.

51757042 is a deficient number, since it is larger than the sum of its proper divisors (29746958).

51757042 is a wasteful number, since it uses less digits than its factorization.

51757042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14241.

The product of its (nonzero) digits is 9800, while the sum is 31.

The square root of 51757042 is about 7194.2367211540. The cubic root of 51757042 is about 372.6688980779.

The spelling of 51757042 in words is "fifty-one million, seven hundred fifty-seven thousand, forty-two".