90297555 has 8 divisors (see below), whose sum is σ = 144476112. Its totient is φ = 48158688.

The previous prime is 90297541. The next prime is 90297577. The reversal of 90297555 is 55579209.

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

It is not a de Polignac number, because 90297555 - 2⁸ = 90297299 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3009904 + ... + 3009933.

It is an arithmetic number, because the mean of its divisors is an integer number (18059514).

Almost surely, 2^90297555 is an apocalyptic number.

90297555 is a deficient number, since it is larger than the sum of its proper divisors (54178557).

90297555 is a wasteful number, since it uses less digits than its factorization.

90297555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6019845.

The product of its (nonzero) digits is 141750, while the sum is 42.

The square root of 90297555 is about 9502.5025651141. The cubic root of 90297555 is about 448.6338070745.

The spelling of 90297555 in words is "ninety million, two hundred ninety-seven thousand, five hundred fifty-five".