90877545 has 40 divisors (see below), whose sum is σ = 177724800. Its totient is φ = 44059680.

The previous prime is 90877543. The next prime is 90877573. The reversal of 90877545 is 54577809.

It is not a de Polignac number, because 90877545 - 2¹ = 90877543 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 90877545.

It is not an unprimeable number, because it can be changed into a prime (90877541) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5745 + ... + 14654.

It is an arithmetic number, because the mean of its divisors is an integer number (4443120).

Almost surely, 2^90877545 is an apocalyptic number.

It is an amenable number.

90877545 is a deficient number, since it is larger than the sum of its proper divisors (86847255).

90877545 is a wasteful number, since it uses less digits than its factorization.

90877545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20427 (or 20418 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 45.

The square root of 90877545 is about 9532.9714674911. The cubic root of 90877545 is about 449.5922973973.

The spelling of 90877545 in words is "ninety million, eight hundred seventy-seven thousand, five hundred forty-five".