51585742 has 16 divisors (see below), whose sum is σ = 84475440. Its totient is φ = 23481792.

The previous prime is 51585719. The next prime is 51585761. The reversal of 51585742 is 24758515.

It is a super-2 number, since 2×51585742² = 5322177555381128, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11692 + ... + 15487.

It is an arithmetic number, because the mean of its divisors is an integer number (5279715).

Almost surely, 2^51585742 is an apocalyptic number.

51585742 is a deficient number, since it is larger than the sum of its proper divisors (32889698).

51585742 is a wasteful number, since it uses less digits than its factorization.

51585742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27267.

The product of its digits is 56000, while the sum is 37.

The square root of 51585742 is about 7182.3214909944. The cubic root of 51585742 is about 372.2573035853.

The spelling of 51585742 in words is "fifty-one million, five hundred eighty-five thousand, seven hundred forty-two".