51379901 has 2 divisors, whose sum is σ = 51379902. Its totient is φ = 51379900.

The previous prime is 51379897. The next prime is 51379919. The reversal of 51379901 is 10997315.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42588676 + 8791225 = 6526^2 + 2965^2 .

It is a cyclic number.

It is not a de Polignac number, because 51379901 - 2² = 51379897 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51379921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25689950 + 25689951.

It is an arithmetic number, because the mean of its divisors is an integer number (25689951).

Almost surely, 2^51379901 is an apocalyptic number.

It is an amenable number.

51379901 is a deficient number, since it is larger than the sum of its proper divisors (1).

51379901 is an equidigital number, since it uses as much as digits as its factorization.

51379901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8505, while the sum is 35.

The square root of 51379901 is about 7167.9774692726. The cubic root of 51379901 is about 371.7615079229.

The spelling of 51379901 in words is "fifty-one million, three hundred seventy-nine thousand, nine hundred one".