90548915 has 4 divisors (see below), whose sum is σ = 108658704. Its totient is φ = 72439128.

The previous prime is 90548891. The next prime is 90548921. The reversal of 90548915 is 51984509.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51984509 = 647 ⋅80347.

It is a cyclic number.

It is not a de Polignac number, because 90548915 - 2⁸ = 90548659 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9054887 + ... + 9054896.

It is an arithmetic number, because the mean of its divisors is an integer number (27164676).

Almost surely, 2^90548915 is an apocalyptic number.

90548915 is a deficient number, since it is larger than the sum of its proper divisors (18109789).

90548915 is a wasteful number, since it uses less digits than its factorization.

90548915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18109788.

The product of its (nonzero) digits is 64800, while the sum is 41.

The square root of 90548915 is about 9515.7193632431. The cubic root of 90548915 is about 449.0497065520.

The spelling of 90548915 in words is "ninety million, five hundred forty-eight thousand, nine hundred fifteen".