90916545 has 16 divisors (see below), whose sum is σ = 145595520. Its totient is φ = 48445824.

The previous prime is 90916541. The next prime is 90916547. The reversal of 90916545 is 54561909.

It is not a de Polignac number, because 90916545 - 2² = 90916541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90916541) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 22252 + ... + 26018.

It is an arithmetic number, because the mean of its divisors is an integer number (9099720).

Almost surely, 2^90916545 is an apocalyptic number.

It is an amenable number.

90916545 is a deficient number, since it is larger than the sum of its proper divisors (54678975).

90916545 is a wasteful number, since it uses less digits than its factorization.

90916545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5384.

The product of its (nonzero) digits is 48600, while the sum is 39.

The square root of 90916545 is about 9535.0167802684. The cubic root of 90916545 is about 449.6566022152.

It can be divided in two parts, 9091 and 6545, that multiplied together give a palindrome (59500595).

The spelling of 90916545 in words is "ninety million, nine hundred sixteen thousand, five hundred forty-five".