90605501 has 8 divisors (see below), whose sum is σ = 103674240. Its totient is φ = 77568048.

The previous prime is 90605477. The next prime is 90605503. The reversal of 90605501 is 10550609.

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 90605501 - 2¹⁰ = 90604477 is a prime.

It is a super-2 number, since 2×90605501² = 16418713622922002, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90605503) 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, 1241 + ... + 13518.

It is an arithmetic number, because the mean of its divisors is an integer number (12959280).

Almost surely, 2^90605501 is an apocalyptic number.

It is an amenable number.

90605501 is a deficient number, since it is larger than the sum of its proper divisors (13068739).

90605501 is a wasteful number, since it uses less digits than its factorization.

90605501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15643.

The product of its (nonzero) digits is 1350, while the sum is 26.

The square root of 90605501 is about 9518.6921895815. The cubic root of 90605501 is about 449.1432274056.

The spelling of 90605501 in words is "ninety million, six hundred five thousand, five hundred one".