90053615 has 4 divisors (see below), whose sum is σ = 108064344. Its totient is φ = 72042888.

The previous prime is 90053611. The next prime is 90053627. The reversal of 90053615 is 51635009.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51635009 = 227 ⋅227467.

It is a cyclic number.

It is not a de Polignac number, because 90053615 - 2² = 90053611 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 (90053611) 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, 9005357 + ... + 9005366.

It is an arithmetic number, because the mean of its divisors is an integer number (27016086).

Almost surely, 2^90053615 is an apocalyptic number.

90053615 is a deficient number, since it is larger than the sum of its proper divisors (18010729).

90053615 is a wasteful number, since it uses less digits than its factorization.

90053615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18010728.

The product of its (nonzero) digits is 4050, while the sum is 29.

The square root of 90053615 is about 9489.6583184011. The cubic root of 90053615 is about 448.2294460704.

The spelling of 90053615 in words is "ninety million, fifty-three thousand, six hundred fifteen".