51726901 has 2 divisors, whose sum is σ = 51726902. Its totient is φ = 51726900.

The previous prime is 51726877. The next prime is 51726907. The reversal of 51726901 is 10962715.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29964676 + 21762225 = 5474^2 + 4665^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51726901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51726907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25863450 + 25863451.

It is an arithmetic number, because the mean of its divisors is an integer number (25863451).

Almost surely, 2^51726901 is an apocalyptic number.

It is an amenable number.

51726901 is a deficient number, since it is larger than the sum of its proper divisors (1).

51726901 is an equidigital number, since it uses as much as digits as its factorization.

51726901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 51726901 is about 7192.1416142899. The cubic root of 51726901 is about 372.5965420983.

The spelling of 51726901 in words is "fifty-one million, seven hundred twenty-six thousand, nine hundred one".