90505201 has 8 divisors (see below), whose sum is σ = 94504320. Its totient is φ = 86564688.

The previous prime is 90505187. The next prime is 90505211. The reversal of 90505201 is 10250509.

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

It is a cyclic number.

It is not a de Polignac number, because 90505201 - 2⁵ = 90505169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90505211) 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, 11481 + ... + 17686.

It is an arithmetic number, because the mean of its divisors is an integer number (11813040).

Almost surely, 2^90505201 is an apocalyptic number.

It is an amenable number.

90505201 is a deficient number, since it is larger than the sum of its proper divisors (3999119).

90505201 is a wasteful number, since it uses less digits than its factorization.

90505201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29303.

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 90505201 is about 9513.4221497840. The cubic root of 90505201 is about 448.9774328401.

The spelling of 90505201 in words is "ninety million, five hundred five thousand, two hundred one".