90165755 has 8 divisors (see below), whose sum is σ = 108451392. Its totient is φ = 71964288.

The previous prime is 90165749. The next prime is 90165791. The reversal of 90165755 is 55756109.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90165755 - 2⁸ = 90165499 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18659 + ... + 22988.

It is an arithmetic number, because the mean of its divisors is an integer number (13556424).

Almost surely, 2^90165755 is an apocalyptic number.

90165755 is a deficient number, since it is larger than the sum of its proper divisors (18285637).

90165755 is a wasteful number, since it uses less digits than its factorization.

90165755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42085.

The product of its (nonzero) digits is 47250, while the sum is 38.

The square root of 90165755 is about 9495.5650174173. The cubic root of 90165755 is about 448.4154226891.

The spelling of 90165755 in words is "ninety million, one hundred sixty-five thousand, seven hundred fifty-five".