51814901 has 2 divisors, whose sum is σ = 51814902. Its totient is φ = 51814900.

The previous prime is 51814879. The next prime is 51814933. The reversal of 51814901 is 10941815.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51051025 + 763876 = 7145^2 + 874^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51814901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51811901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25907450 + 25907451.

It is an arithmetic number, because the mean of its divisors is an integer number (25907451).

Almost surely, 2^51814901 is an apocalyptic number.

It is an amenable number.

51814901 is a deficient number, since it is larger than the sum of its proper divisors (1).

51814901 is an equidigital number, since it uses as much as digits as its factorization.

51814901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 29.

The square root of 51814901 is about 7198.2568028655. The cubic root of 51814901 is about 372.8077147435.

The spelling of 51814901 in words is "fifty-one million, eight hundred fourteen thousand, nine hundred one".