90153081 has 20 divisors (see below), whose sum is σ = 141763600. Its totient is φ = 56937816.

The previous prime is 90153073. The next prime is 90153103. The reversal of 90153081 is 18035109.

It is not a de Polignac number, because 90153081 - 2³ = 90153073 is a prime.

It is a super-2 number, since 2×90153081² = 16255156027585122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90153071) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 27751 + ... + 30828.

It is an arithmetic number, because the mean of its divisors is an integer number (7088180).

Almost surely, 2^90153081 is an apocalyptic number.

It is an amenable number.

90153081 is a deficient number, since it is larger than the sum of its proper divisors (51610519).

90153081 is a wasteful number, since it uses less digits than its factorization.

90153081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58610 (or 58601 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 90153081 is about 9494.8976297799. The cubic root of 90153081 is about 448.3944114475.

The spelling of 90153081 in words is "ninety million, one hundred fifty-three thousand, eighty-one".