90655501 has 4 divisors (see below), whose sum is σ = 93579904. Its totient is φ = 87731100.

The previous prime is 90655483. The next prime is 90655511. The reversal of 90655501 is 10555609.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 90655501 - 2¹⁷ = 90524429 is a prime.

It is a super-2 number, since 2×90655501² = 16436839723122002, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 2924371 = 90655501 / (9 + 0 + 6 + 5 + 5 + 5 + 0 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90655511) 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, 1462155 + ... + 1462216.

It is an arithmetic number, because the mean of its divisors is an integer number (23394976).

Almost surely, 2^90655501 is an apocalyptic number.

It is an amenable number.

90655501 is a deficient number, since it is larger than the sum of its proper divisors (2924403).

90655501 is a wasteful number, since it uses less digits than its factorization.

90655501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2924402.

The product of its (nonzero) digits is 6750, while the sum is 31.

The square root of 90655501 is about 9521.3182385634. The cubic root of 90655501 is about 449.2258310424.

The spelling of 90655501 in words is "ninety million, six hundred fifty-five thousand, five hundred one".