51500136 has 16 divisors (see below), whose sum is σ = 128750400. Its totient is φ = 17166704.

The previous prime is 51500101. The next prime is 51500147. The reversal of 51500136 is 63100515.

It is a happy 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 3 ways as a sum of consecutive naturals, for example, 1072896 + ... + 1072943.

It is an arithmetic number, because the mean of its divisors is an integer number (8046900).

Almost surely, 2^51500136 is an apocalyptic number.

It is an amenable number.

51500136 is an abundant number, since it is smaller than the sum of its proper divisors (77250264).

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

51500136 is a wasteful number, since it uses less digits than its factorization.

51500136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2145848 (or 2145844 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 51500136 is about 7176.3595227664. The cubic root of 51500136 is about 372.0512705377.

The spelling of 51500136 in words is "fifty-one million, five hundred thousand, one hundred thirty-six".