51660854 has 16 divisors (see below), whose sum is σ = 88670976. Its totient is φ = 22113000.

The previous prime is 51660853. The next prime is 51660857. The reversal of 51660854 is 45806615.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51660853) 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, 12959 + ... + 16469.

It is an arithmetic number, because the mean of its divisors is an integer number (5541936).

Almost surely, 2^51660854 is an apocalyptic number.

51660854 is a deficient number, since it is larger than the sum of its proper divisors (37010122).

51660854 is a wasteful number, since it uses less digits than its factorization.

51660854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4571.

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 51660854 is about 7187.5485389665. The cubic root of 51660854 is about 372.4378924424.

The spelling of 51660854 in words is "fifty-one million, six hundred sixty thousand, eight hundred fifty-four".