90459543 has 4 divisors (see below), whose sum is σ = 120612728. Its totient is φ = 60306360.

The previous prime is 90459541. The next prime is 90459553. The reversal of 90459543 is 34595409.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 90459543 - 2¹ = 90459541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90459541) 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, 15076588 + ... + 15076593.

It is an arithmetic number, because the mean of its divisors is an integer number (30153182).

Almost surely, 2^90459543 is an apocalyptic number.

90459543 is a deficient number, since it is larger than the sum of its proper divisors (30153185).

90459543 is a wasteful number, since it uses less digits than its factorization.

90459543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30153184.

The product of its (nonzero) digits is 97200, while the sum is 39.

The square root of 90459543 is about 9511.0221848127. The cubic root of 90459543 is about 448.9019202009.

The spelling of 90459543 in words is "ninety million, four hundred fifty-nine thousand, five hundred forty-three".