90572269 has 2 divisors, whose sum is σ = 90572270. Its totient is φ = 90572268.

The previous prime is 90572227. The next prime is 90572281. The reversal of 90572269 is 96227509.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58706244 + 31866025 = 7662^2 + 5645^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90572269 is a prime.

It is a super-2 number, since 2×90572269² = 16406671823616722, 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 (90572299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45286134 + 45286135.

It is an arithmetic number, because the mean of its divisors is an integer number (45286135).

Almost surely, 2^90572269 is an apocalyptic number.

It is an amenable number.

90572269 is a deficient number, since it is larger than the sum of its proper divisors (1).

90572269 is an equidigital number, since it uses as much as digits as its factorization.

90572269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 90572269 is about 9516.9464115335. The cubic root of 90572269 is about 449.0883089118.

The spelling of 90572269 in words is "ninety million, five hundred seventy-two thousand, two hundred sixty-nine".