90542371 has 4 divisors (see below), whose sum is σ = 91119232. Its totient is φ = 89965512.

The previous prime is 90542369. The next prime is 90542377. The reversal of 90542371 is 17324509.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17324509 = 41 ⋅422549.

It is a cyclic number.

It is not a de Polignac number, because 90542371 - 2¹ = 90542369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90542377) 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, 288195 + ... + 288508.

It is an arithmetic number, because the mean of its divisors is an integer number (22779808).

Almost surely, 2^90542371 is an apocalyptic number.

90542371 is a deficient number, since it is larger than the sum of its proper divisors (576861).

90542371 is a wasteful number, since it uses less digits than its factorization.

90542371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576860.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 90542371 is about 9515.3755049394. The cubic root of 90542371 is about 449.0388886345.

The spelling of 90542371 in words is "ninety million, five hundred forty-two thousand, three hundred seventy-one".