72552269 has 2 divisors, whose sum is σ = 72552270. Its totient is φ = 72552268.

The previous prime is 72552251. The next prime is 72552299. The reversal of 72552269 is 96225527.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66227044 + 6325225 = 8138^2 + 2515^2 .

It is a cyclic number.

It is not a de Polignac number, because 72552269 - 2¹² = 72548173 is a prime.

It is a super-2 number, since 2×72552269² = 10527663474096722, 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 (72552299) 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, 36276134 + 36276135.

It is an arithmetic number, because the mean of its divisors is an integer number (36276135).

Almost surely, 2^72552269 is an apocalyptic number.

It is an amenable number.

72552269 is a deficient number, since it is larger than the sum of its proper divisors (1).

72552269 is an equidigital number, since it uses as much as digits as its factorization.

72552269 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75600, while the sum is 38.

The square root of 72552269 is about 8517.7619713162. The cubic root of 72552269 is about 417.0777285918.

The spelling of 72552269 in words is "seventy-two million, five hundred fifty-two thousand, two hundred sixty-nine".