90957505 has 4 divisors (see below), whose sum is σ = 109149012. Its totient is φ = 72766000.

The previous prime is 90957499. The next prime is 90957511. The reversal of 90957505 is 50575909.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (90957499) and next prime (90957511).

It can be written as a sum of positive squares in 2 ways, for example, as 33258289 + 57699216 = 5767^2 + 7596^2 .

It is not a de Polignac number, because 90957505 - 2⁹ = 90956993 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9095746 + ... + 9095755.

It is an arithmetic number, because the mean of its divisors is an integer number (27287253).

Almost surely, 2^90957505 is an apocalyptic number.

It is an amenable number.

90957505 is a deficient number, since it is larger than the sum of its proper divisors (18191507).

90957505 is a wasteful number, since it uses less digits than its factorization.

90957505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18191506.

The product of its (nonzero) digits is 70875, while the sum is 40.

The square root of 90957505 is about 9537.1644108718. The cubic root of 90957505 is about 449.7241189663.

The spelling of 90957505 in words is "ninety million, nine hundred fifty-seven thousand, five hundred five".