51131046 has 8 divisors (see below), whose sum is σ = 102262104. Its totient is φ = 17043680.

The previous prime is 51131039. The next prime is 51131051. The reversal of 51131046 is 64013115.

It is a sphenic number, since it is the product of 3 distinct primes.

51131046 is an admirable number.

It is a super-2 number, since 2×51131046² = 5228767730108232, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 4260915 + ... + 4260926.

It is an arithmetic number, because the mean of its divisors is an integer number (12782763).

Almost surely, 2^51131046 is an apocalyptic number.

51131046 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

51131046 is a wasteful number, since it uses less digits than its factorization.

51131046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8521846.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 51131046 is about 7150.5975974040. The cubic root of 51131046 is about 371.1603359060.

The spelling of 51131046 in words is "fifty-one million, one hundred thirty-one thousand, forty-six".