51576091 has 4 divisors (see below), whose sum is σ = 58944112. Its totient is φ = 44208072.

The previous prime is 51576071. The next prime is 51576103. The reversal of 51576091 is 19067515.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19067515 = 5 ⋅3813503.

It is a cyclic number.

It is not a de Polignac number, because 51576091 - 2⁵ = 51576059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51576001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3684000 + ... + 3684013.

It is an arithmetic number, because the mean of its divisors is an integer number (14736028).

Almost surely, 2^51576091 is an apocalyptic number.

51576091 is a deficient number, since it is larger than the sum of its proper divisors (7368021).

51576091 is an equidigital number, since it uses as much as digits as its factorization.

51576091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7368020.

The product of its (nonzero) digits is 9450, while the sum is 34.

The square root of 51576091 is about 7181.6496015888. The cubic root of 51576091 is about 372.2340873556.

The spelling of 51576091 in words is "fifty-one million, five hundred seventy-six thousand, ninety-one".