52120669 has 2 divisors, whose sum is σ = 52120670. Its totient is φ = 52120668.

The previous prime is 52120631. The next prime is 52120681. The reversal of 52120669 is 96602125.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45292900 + 6827769 = 6730^2 + 2613^2 .

It is a cyclic number.

It is not a de Polignac number, because 52120669 - 2²¹ = 50023517 is a prime.

It is a super-2 number, since 2×52120669² = 5433128274015122, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 52120669.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52120609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26060334 + 26060335.

It is an arithmetic number, because the mean of its divisors is an integer number (26060335).

Almost surely, 2^52120669 is an apocalyptic number.

It is an amenable number.

52120669 is a deficient number, since it is larger than the sum of its proper divisors (1).

52120669 is an equidigital number, since it uses as much as digits as its factorization.

52120669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 52120669 is about 7219.4645923365. The cubic root of 52120669 is about 373.5396095570.

The spelling of 52120669 in words is "fifty-two million, one hundred twenty thousand, six hundred sixty-nine".