51005106 has 32 divisors (see below), whose sum is σ = 117004800. Its totient is φ = 16452720.

The previous prime is 51005057. The next prime is 51005167. The reversal of 51005106 is 60150015.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

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, 13561 + ... + 16908.

It is an arithmetic number, because the mean of its divisors is an integer number (3656400).

Almost surely, 2^51005106 is an apocalyptic number.

51005106 is an abundant number, since it is smaller than the sum of its proper divisors (65999694).

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

51005106 is a wasteful number, since it uses less digits than its factorization.

51005106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30511 (or 30505 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 51005106 is about 7141.7859111009. The cubic root of 51005106 is about 370.8553524891.

The spelling of 51005106 in words is "fifty-one million, five thousand, one hundred six".