90075015 has 48 divisors (see below), whose sum is σ = 168592320. Its totient is φ = 44352000.

The previous prime is 90074987. The next prime is 90075043. The reversal of 90075015 is 51057009.

It is an interprime number because it is at equal distance from previous prime (90074987) and next prime (90075043).

It is not a de Polignac number, because 90075015 - 2⁶ = 90074951 is a prime.

It is a super-2 number, since 2×90075015² = 16227016654500450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 90075015.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 28515 + ... + 31515.

It is an arithmetic number, because the mean of its divisors is an integer number (3512340).

Almost surely, 2^90075015 is an apocalyptic number.

90075015 is a deficient number, since it is larger than the sum of its proper divisors (78517305).

90075015 is a wasteful number, since it uses less digits than its factorization.

90075015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3064 (or 3061 counting only the distinct ones).

The product of its (nonzero) digits is 1575, while the sum is 27.

The square root of 90075015 is about 9490.7857946537. The cubic root of 90075015 is about 448.2649484410.

The spelling of 90075015 in words is "ninety million, seventy-five thousand, fifteen".