90520955 has 8 divisors (see below), whose sum is σ = 124143072. Its totient is φ = 62071488.

The previous prime is 90520867. The next prime is 90520957. The reversal of 90520955 is 55902509.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90520955 - 2¹⁸ = 90258811 is a prime.

It is a super-2 number, since 2×90520955² = 16388086588224050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 2586313 = 90520955 / (9 + 0 + 5 + 2 + 0 + 9 + 5 + 5).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90520957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1293122 + ... + 1293191.

It is an arithmetic number, because the mean of its divisors is an integer number (15517884).

Almost surely, 2^90520955 is an apocalyptic number.

90520955 is a deficient number, since it is larger than the sum of its proper divisors (33622117).

90520955 is a wasteful number, since it uses less digits than its factorization.

90520955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2586325.

The product of its (nonzero) digits is 20250, while the sum is 35.

The square root of 90520955 is about 9514.2501018210. The cubic root of 90520955 is about 449.0034820986.

The spelling of 90520955 in words is "ninety million, five hundred twenty thousand, nine hundred fifty-five".