51544986 has 32 divisors (see below), whose sum is σ = 114903360. Its totient is φ = 15319296.

The previous prime is 51544957. The next prime is 51545023. The reversal of 51544986 is 68944515.

It is an unprimeable number.

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, 11361 + ... + 15236.

It is an arithmetic number, because the mean of its divisors is an integer number (3590730).

Almost surely, 2^51544986 is an apocalyptic number.

51544986 is an abundant number, since it is smaller than the sum of its proper divisors (63358374).

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

51544986 is a wasteful number, since it uses less digits than its factorization.

51544986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26638.

The product of its digits is 172800, while the sum is 42.

The square root of 51544986 is about 7179.4836861713. The cubic root of 51544986 is about 372.1592421483.

The spelling of 51544986 in words is "fifty-one million, five hundred forty-four thousand, nine hundred eighty-six".