52699561 has 2 divisors, whose sum is σ = 52699562. Its totient is φ = 52699560.

The previous prime is 52699523. The next prime is 52699573. The reversal of 52699561 is 16599625.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52417600 + 281961 = 7240^2 + 531^2 .

It is a cyclic number.

It is not a de Polignac number, because 52699561 - 2¹⁵ = 52666793 is a prime.

It is not a weakly prime, because it can be changed into another prime (52699511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26349780 + 26349781.

It is an arithmetic number, because the mean of its divisors is an integer number (26349781).

Almost surely, 2^52699561 is an apocalyptic number.

It is an amenable number.

52699561 is a deficient number, since it is larger than the sum of its proper divisors (1).

52699561 is an equidigital number, since it uses as much as digits as its factorization.

52699561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145800, while the sum is 43.

The square root of 52699561 is about 7259.4463287499. The cubic root of 52699561 is about 374.9174597595.

The spelling of 52699561 in words is "fifty-two million, six hundred ninety-nine thousand, five hundred sixty-one".