52649669 has 2 divisors, whose sum is σ = 52649670. Its totient is φ = 52649668.

The previous prime is 52649657. The next prime is 52649677. The reversal of 52649669 is 96694625.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40132225 + 12517444 = 6335^2 + 3538^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52649669 is a prime.

It is a super-2 number, since 2×52649669² = 5543975291619122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52649869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26324834 + 26324835.

It is an arithmetic number, because the mean of its divisors is an integer number (26324835).

Almost surely, 2^52649669 is an apocalyptic number.

It is an amenable number.

52649669 is a deficient number, since it is larger than the sum of its proper divisors (1).

52649669 is an equidigital number, since it uses as much as digits as its factorization.

52649669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 699840, while the sum is 47.

The square root of 52649669 is about 7256.0091648233. The cubic root of 52649669 is about 374.7991078062.

The spelling of 52649669 in words is "fifty-two million, six hundred forty-nine thousand, six hundred sixty-nine".