52491697 has 2 divisors, whose sum is σ = 52491698. Its totient is φ = 52491696.

The previous prime is 52491683. The next prime is 52491709. The reversal of 52491697 is 79619425.

It is a happy number.

52491697 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51136801 + 1354896 = 7151^2 + 1164^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52491697 is a prime.

It is not a weakly prime, because it can be changed into another prime (52491617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26245848 + 26245849.

It is an arithmetic number, because the mean of its divisors is an integer number (26245849).

Almost surely, 2^52491697 is an apocalyptic number.

It is an amenable number.

52491697 is a deficient number, since it is larger than the sum of its proper divisors (1).

52491697 is an equidigital number, since it uses as much as digits as its factorization.

52491697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 43.

The square root of 52491697 is about 7245.1153890052. The cubic root of 52491697 is about 374.4238786036.

The spelling of 52491697 in words is "fifty-two million, four hundred ninety-one thousand, six hundred ninety-seven".