90575029 has 2 divisors, whose sum is σ = 90575030. Its totient is φ = 90575028.

The previous prime is 90575021. The next prime is 90575047. The reversal of 90575029 is 92057509.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86583025 + 3992004 = 9305^2 + 1998^2 .

It is a cyclic number.

It is not a de Polignac number, because 90575029 - 2³ = 90575021 is a prime.

It is equal to p_5248477 and since 90575029 and 5248477 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90575021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45287514 + 45287515.

It is an arithmetic number, because the mean of its divisors is an integer number (45287515).

Almost surely, 2^90575029 is an apocalyptic number.

It is an amenable number.

90575029 is a deficient number, since it is larger than the sum of its proper divisors (1).

90575029 is an equidigital number, since it uses as much as digits as its factorization.

90575029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28350, while the sum is 37.

The square root of 90575029 is about 9517.0914149229. The cubic root of 90575029 is about 449.0928705403.

The spelling of 90575029 in words is "ninety million, five hundred seventy-five thousand, twenty-nine".