51353191 has 2 divisors, whose sum is σ = 51353192. Its totient is φ = 51353190.

The previous prime is 51353177. The next prime is 51353249. The reversal of 51353191 is 19135315.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51353191 - 2⁷ = 51353063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51353161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25676595 + 25676596.

It is an arithmetic number, because the mean of its divisors is an integer number (25676596).

Almost surely, 2^51353191 is an apocalyptic number.

51353191 is a deficient number, since it is larger than the sum of its proper divisors (1).

51353191 is an equidigital number, since it uses as much as digits as its factorization.

51353191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2025, while the sum is 28.

The square root of 51353191 is about 7166.1140794715. The cubic root of 51353191 is about 371.6970763011.

The spelling of 51353191 in words is "fifty-one million, three hundred fifty-three thousand, one hundred ninety-one".