90547417 has 4 divisors (see below), whose sum is σ = 90762916. Its totient is φ = 90331920.

The previous prime is 90547411. The next prime is 90547447. The reversal of 90547417 is 71474509.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71474509 = 251 ⋅284759.

It can be written as a sum of positive squares in 2 ways, for example, as 10784656 + 79762761 = 3284^2 + 8931^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90547417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90547411) 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, 107118 + ... + 107959.

It is an arithmetic number, because the mean of its divisors is an integer number (22690729).

Almost surely, 2^90547417 is an apocalyptic number.

It is an amenable number.

90547417 is a deficient number, since it is larger than the sum of its proper divisors (215499).

90547417 is a wasteful number, since it uses less digits than its factorization.

90547417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215498.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 90547417 is about 9515.6406510545. The cubic root of 90547417 is about 449.0472302471.

It can be divided in two parts, 9054 and 7417, that added together give a triangular number (16471 = T₁₈₁).

The spelling of 90547417 in words is "ninety million, five hundred forty-seven thousand, four hundred seventeen".