51136090 has 8 divisors (see below), whose sum is σ = 92044980. Its totient is φ = 20454432.

The previous prime is 51136027. The next prime is 51136097. The reversal of 51136090 is 9063115.

It can be written as a sum of positive squares in 2 ways, for example, as 51108201 + 27889 = 7149^2 + 167^2 .

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

It is a super-2 number, since 2×51136090² = 5229799400976200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51136097) by changing a digit.

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, 2556795 + ... + 2556814.

Almost surely, 2^51136090 is an apocalyptic number.

51136090 is a deficient number, since it is larger than the sum of its proper divisors (40908890).

51136090 is a wasteful number, since it uses less digits than its factorization.

51136090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5113616.

The product of its (nonzero) digits is 810, while the sum is 25.

The square root of 51136090 is about 7150.9502865004. The cubic root of 51136090 is about 371.1725403058.

The spelling of 51136090 in words is "fifty-one million, one hundred thirty-six thousand, ninety".