51030091 has 8 divisors (see below), whose sum is σ = 58367744. Its totient is φ = 43704360.

The previous prime is 51030079. The next prime is 51030101. The reversal of 51030091 is 19003015.

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

It is not a de Polignac number, because 51030091 - 2⁵ = 51030059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51030041) 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 7 ways as a sum of consecutive naturals, for example, 9946 + ... + 14176.

It is an arithmetic number, because the mean of its divisors is an integer number (7295968).

Almost surely, 2^51030091 is an apocalyptic number.

51030091 is a deficient number, since it is larger than the sum of its proper divisors (7337653).

51030091 is a wasteful number, since it uses less digits than its factorization.

51030091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5961.

The product of its (nonzero) digits is 135, while the sum is 19.

The square root of 51030091 is about 7143.5349092729. The cubic root of 51030091 is about 370.9158974629.

The spelling of 51030091 in words is "fifty-one million, thirty thousand, ninety-one".