51390883 has 2 divisors, whose sum is σ = 51390884. Its totient is φ = 51390882.

The previous prime is 51390851. The next prime is 51390959. The reversal of 51390883 is 38809315.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51390883 - 2⁵ = 51390851 is a prime.

It is not a weakly prime, because it can be changed into another prime (51390083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25695441 + 25695442.

It is an arithmetic number, because the mean of its divisors is an integer number (25695442).

Almost surely, 2^51390883 is an apocalyptic number.

51390883 is a deficient number, since it is larger than the sum of its proper divisors (1).

51390883 is an equidigital number, since it uses as much as digits as its factorization.

51390883 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 51390883 is about 7168.7434742778. The cubic root of 51390883 is about 371.7879929488.

The spelling of 51390883 in words is "fifty-one million, three hundred ninety thousand, eight hundred eighty-three".