52129669 has 2 divisors, whose sum is σ = 52129670. Its totient is φ = 52129668.

The previous prime is 52129621. The next prime is 52129723. The reversal of 52129669 is 96692125.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50836900 + 1292769 = 7130^2 + 1137^2 .

It is a cyclic number.

It is not a de Polignac number, because 52129669 - 2⁷ = 52129541 is a prime.

It is a super-2 number, since 2×52129669² = 5435004780099122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52129619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26064834 + 26064835.

It is an arithmetic number, because the mean of its divisors is an integer number (26064835).

Almost surely, 2^52129669 is an apocalyptic number.

It is an amenable number.

52129669 is a deficient number, since it is larger than the sum of its proper divisors (1).

52129669 is an equidigital number, since it uses as much as digits as its factorization.

52129669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58320, while the sum is 40.

The square root of 52129669 is about 7220.0878803516. The cubic root of 52129669 is about 373.5611087886.

The spelling of 52129669 in words is "fifty-two million, one hundred twenty-nine thousand, six hundred sixty-nine".