51712542 has 36 divisors (see below), whose sum is σ = 130338936. Its totient is φ = 14774760.

The previous prime is 51712541. The next prime is 51712571. The reversal of 51712542 is 24521715.

51712542 is a `hidden beast` number, since 51 + 71 + 2 + 542 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51712541) 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 17 ways as a sum of consecutive naturals, for example, 28434 + ... + 30197.

It is an arithmetic number, because the mean of its divisors is an integer number (3620526).

Almost surely, 2^51712542 is an apocalyptic number.

51712542 is an abundant number, since it is smaller than the sum of its proper divisors (78626394).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51712542 is a wasteful number, since it uses less digits than its factorization.

51712542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58653 (or 58643 counting only the distinct ones).

The product of its digits is 2800, while the sum is 27.

The square root of 51712542 is about 7191.1433027023. The cubic root of 51712542 is about 372.5620622385.

The spelling of 51712542 in words is "fifty-one million, seven hundred twelve thousand, five hundred forty-two".