51660154 has 32 divisors (see below), whose sum is σ = 96606720. Its totient is φ = 20172672.

The previous prime is 51660137. The next prime is 51660173. The reversal of 51660154 is 45106615.

It is a super-2 number, since 2×51660154² = 5337543022607432, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12582 + ... + 16174.

It is an arithmetic number, because the mean of its divisors is an integer number (3018960).

Almost surely, 2^51660154 is an apocalyptic number.

51660154 is a deficient number, since it is larger than the sum of its proper divisors (44946566).

51660154 is a wasteful number, since it uses less digits than its factorization.

51660154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3694.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 51660154 is about 7187.4998434783. The cubic root of 51660154 is about 372.4362102680.

Adding to 51660154 its reverse (45106615), we get a palindrome (96766769).

The spelling of 51660154 in words is "fifty-one million, six hundred sixty thousand, one hundred fifty-four".