90515566 has 8 divisors (see below), whose sum is σ = 136524024. Its totient is φ = 45007560.

The previous prime is 90515543. The next prime is 90515587. The reversal of 90515566 is 66551509.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124660 + ... + 125383.

It is an arithmetic number, because the mean of its divisors is an integer number (17065503).

Almost surely, 2^90515566 is an apocalyptic number.

90515566 is a deficient number, since it is larger than the sum of its proper divisors (46008458).

90515566 is a wasteful number, since it uses less digits than its factorization.

90515566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250226.

The product of its (nonzero) digits is 40500, while the sum is 37.

The square root of 90515566 is about 9513.9668908400. The cubic root of 90515566 is about 448.9945717206.

It can be divided in two parts, 905 and 15566, that added together give a triangular number (16471 = T₁₈₁).

The spelling of 90515566 in words is "ninety million, five hundred fifteen thousand, five hundred sixty-six".