51154866 has 24 divisors (see below), whose sum is σ = 126669504. Its totient is φ = 14615640.

The previous prime is 51154837. The next prime is 51154871. The reversal of 51154866 is 66845115.

51154866 is a `hidden beast` number, since 51 + 1 + 548 + 66 = 666.

51154866 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 51154866.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 202870 + ... + 203121.

It is an arithmetic number, because the mean of its divisors is an integer number (5277896).

Almost surely, 2^51154866 is an apocalyptic number.

51154866 is an abundant number, since it is smaller than the sum of its proper divisors (75514638).

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

51154866 is a wasteful number, since it uses less digits than its factorization.

51154866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406006 (or 406003 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 51154866 is about 7152.2629985201. The cubic root of 51154866 is about 371.2179634294.

The spelling of 51154866 in words is "fifty-one million, one hundred fifty-four thousand, eight hundred sixty-six".