90548243 has 4 divisors (see below), whose sum is σ = 95313960. Its totient is φ = 85782528.

The previous prime is 90548233. The next prime is 90548261. The reversal of 90548243 is 34284509.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34284509 = 7 ⋅4897787.

It is a cyclic number.

It is not a de Polignac number, because 90548243 - 2²⁰ = 89499667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90548233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2382830 + ... + 2382867.

It is an arithmetic number, because the mean of its divisors is an integer number (23828490).

Almost surely, 2^90548243 is an apocalyptic number.

90548243 is a deficient number, since it is larger than the sum of its proper divisors (4765717).

90548243 is a wasteful number, since it uses less digits than its factorization.

90548243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4765716.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 90548243 is about 9515.6840531829. The cubic root of 90548243 is about 449.0485956897.

The spelling of 90548243 in words is "ninety million, five hundred forty-eight thousand, two hundred forty-three".