90515203 has 4 divisors (see below), whose sum is σ = 90542808. Its totient is φ = 90487600.

The previous prime is 90515179. The next prime is 90515219. The reversal of 90515203 is 30251509.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30251509 = 23 ⋅1315283.

It is a cyclic number.

It is not a de Polignac number, because 90515203 - 2⁵ = 90515171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90516203) 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, 8098 + ... + 15703.

It is an arithmetic number, because the mean of its divisors is an integer number (22635702).

Almost surely, 2^90515203 is an apocalyptic number.

90515203 is a deficient number, since it is larger than the sum of its proper divisors (27605).

90515203 is a wasteful number, since it uses less digits than its factorization.

90515203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27604.

The product of its (nonzero) digits is 1350, while the sum is 25.

The square root of 90515203 is about 9513.9478136050. The cubic root of 90515203 is about 448.9939715098.

The spelling of 90515203 in words is "ninety million, five hundred fifteen thousand, two hundred three".