90235545 has 8 divisors (see below), whose sum is σ = 144376896. Its totient is φ = 48125616.

The previous prime is 90235529. The next prime is 90235549. The reversal of 90235545 is 54553209.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 90235545 - 2⁴ = 90235529 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (90235549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3007837 + ... + 3007866.

It is an arithmetic number, because the mean of its divisors is an integer number (18047112).

Almost surely, 2^90235545 is an apocalyptic number.

It is an amenable number.

90235545 is a deficient number, since it is larger than the sum of its proper divisors (54141351).

90235545 is a wasteful number, since it uses less digits than its factorization.

90235545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6015711.

The product of its (nonzero) digits is 27000, while the sum is 33.

The square root of 90235545 is about 9499.2391800607. The cubic root of 90235545 is about 448.5310868586.

The spelling of 90235545 in words is "ninety million, two hundred thirty-five thousand, five hundred forty-five".