90555459 has 16 divisors (see below), whose sum is σ = 122943744. Its totient is φ = 59276000.

The previous prime is 90555457. The next prime is 90555499. The reversal of 90555459 is 95455509.

It is a cyclic number.

It is not a de Polignac number, because 90555459 - 2¹ = 90555457 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90555459.

It is not an unprimeable number, because it can be changed into a prime (90555457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61684 + ... + 63134.

It is an arithmetic number, because the mean of its divisors is an integer number (7683984).

Almost surely, 2^90555459 is an apocalyptic number.

90555459 is a deficient number, since it is larger than the sum of its proper divisors (32388285).

90555459 is a wasteful number, since it uses less digits than its factorization.

90555459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1818.

The product of its (nonzero) digits is 202500, while the sum is 42.

The square root of 90555459 is about 9516.0632091217. The cubic root of 90555459 is about 449.0605239483.

The spelling of 90555459 in words is "ninety million, five hundred fifty-five thousand, four hundred fifty-nine".