51618086 has 32 divisors (see below), whose sum is σ = 91355040. Its totient is φ = 21643776.

The previous prime is 51618037. The next prime is 51618089. The reversal of 51618086 is 68081615.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51618089) 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 15 ways as a sum of consecutive naturals, for example, 10805 + ... + 14831.

It is an arithmetic number, because the mean of its divisors is an integer number (2854845).

Almost surely, 2^51618086 is an apocalyptic number.

51618086 is a deficient number, since it is larger than the sum of its proper divisors (39736954).

51618086 is a wasteful number, since it uses less digits than its factorization.

51618086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4088.

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 51618086 is about 7184.5727778345. The cubic root of 51618086 is about 372.3350884811.

The spelling of 51618086 in words is "fifty-one million, six hundred eighteen thousand, eighty-six".