90515505 has 32 divisors (see below), whose sum is σ = 153566208. Its totient is φ = 45446400.

The previous prime is 90515461. The next prime is 90515507. The reversal of 90515505 is 50551509.

It is not a de Polignac number, because 90515505 - 2⁶ = 90515441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90515507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14575 + ... + 19835.

It is an arithmetic number, because the mean of its divisors is an integer number (4798944).

Almost surely, 2^90515505 is an apocalyptic number.

It is an amenable number.

90515505 is a deficient number, since it is larger than the sum of its proper divisors (63050703).

90515505 is a wasteful number, since it uses less digits than its factorization.

90515505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5337.

The product of its (nonzero) digits is 5625, while the sum is 30.

The square root of 90515505 is about 9513.9636850263. The cubic root of 90515505 is about 448.9944708588.

The spelling of 90515505 in words is "ninety million, five hundred fifteen thousand, five hundred five".