90503013 has 8 divisors (see below), whose sum is σ = 121036576. Its totient is φ = 60152400.

The previous prime is 90503009. The next prime is 90503033. The reversal of 90503013 is 31030509.

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

It is not a de Polignac number, because 90503013 - 2² = 90503009 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 (90503033) 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, 44578 + ... + 46563.

It is an arithmetic number, because the mean of its divisors is an integer number (15129572).

Almost surely, 2^90503013 is an apocalyptic number.

It is an amenable number.

90503013 is a deficient number, since it is larger than the sum of its proper divisors (30533563).

90503013 is a wasteful number, since it uses less digits than its factorization.

90503013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91475.

The product of its (nonzero) digits is 405, while the sum is 21.

The square root of 90503013 is about 9513.3071536664. The cubic root of 90503013 is about 448.9738147404.

The spelling of 90503013 in words is "ninety million, five hundred three thousand, thirteen".