90175995 has 144 divisors (see below), whose sum is σ = 206361792. Its totient is φ = 35458560.

The previous prime is 90175979. The next prime is 90175997. The reversal of 90175995 is 59957109.

It is not a de Polignac number, because 90175995 - 2⁴ = 90175979 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 90175995.

It is not an unprimeable number, because it can be changed into a prime (90175997) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1478265 + ... + 1478325.

It is an arithmetic number, because the mean of its divisors is an integer number (1433068).

Almost surely, 2^90175995 is an apocalyptic number.

90175995 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

90175995 is an abundant number, since it is smaller than the sum of its proper divisors (116185797).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90175995 is a wasteful number, since it uses less digits than its factorization.

90175995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130 (or 108 counting only the distinct ones).

The product of its (nonzero) digits is 127575, while the sum is 45.

The square root of 90175995 is about 9496.1042011975. The cubic root of 90175995 is about 448.4323973528.

The spelling of 90175995 in words is "ninety million, one hundred seventy-five thousand, nine hundred ninety-five".