51457042 has 32 divisors (see below), whose sum is σ = 95622912. Its totient is φ = 20222784.

The previous prime is 51457013. The next prime is 51457061. The reversal of 51457042 is 24075415.

It is a self number, because there is not a number n which added to its sum of digits gives 51457042.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29548 + ... + 31240.

It is an arithmetic number, because the mean of its divisors is an integer number (2988216).

Almost surely, 2^51457042 is an apocalyptic number.

51457042 is a deficient number, since it is larger than the sum of its proper divisors (44165870).

51457042 is a wasteful number, since it uses less digits than its factorization.

51457042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1882.

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 51457042 is about 7173.3563971129. The cubic root of 51457042 is about 371.9474672417.

The spelling of 51457042 in words is "fifty-one million, four hundred fifty-seven thousand, forty-two".