51686058 has 16 divisors (see below), whose sum is σ = 103569696. Its totient is φ = 17195760.

The previous prime is 51686057. The next prime is 51686059. The reversal of 51686058 is 85068615.

It is an interprime number because it is at equal distance from previous prime (51686057) and next prime (51686059).

It is not an unprimeable number, because it can be changed into a prime (51686053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4716 + ... + 11207.

It is an arithmetic number, because the mean of its divisors is an integer number (6473106).

Almost surely, 2^51686058 is an apocalyptic number.

51686058 is an abundant number, since it is smaller than the sum of its proper divisors (51883638).

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

51686058 is a wasteful number, since it uses less digits than its factorization.

51686058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16469.

The product of its (nonzero) digits is 57600, while the sum is 39.

The square root of 51686058 is about 7189.3016350686. The cubic root of 51686058 is about 372.4984502135.

The spelling of 51686058 in words is "fifty-one million, six hundred eighty-six thousand, fifty-eight".