51033091 has 2 divisors, whose sum is σ = 51033092. Its totient is φ = 51033090.

The previous prime is 51033061. The next prime is 51033119. The reversal of 51033091 is 19033015.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51033091 is a prime.

It is not a weakly prime, because it can be changed into another prime (51033001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25516545 + 25516546.

It is an arithmetic number, because the mean of its divisors is an integer number (25516546).

Almost surely, 2^51033091 is an apocalyptic number.

51033091 is a deficient number, since it is larger than the sum of its proper divisors (1).

51033091 is an equidigital number, since it uses as much as digits as its factorization.

51033091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 405, while the sum is 22.

The square root of 51033091 is about 7143.7448862624. The cubic root of 51033091 is about 370.9231658926.

The spelling of 51033091 in words is "fifty-one million, thirty-three thousand, ninety-one".