90076221 has 12 divisors (see below), whose sum is σ = 133284060. Its totient is φ = 58585920.

The previous prime is 90076219. The next prime is 90076223. The reversal of 90076221 is 12267009.

It is an interprime number because it is at equal distance from previous prime (90076219) and next prime (90076223).

It can be written as a sum of positive squares in 2 ways, for example, as 32148900 + 57927321 = 5670^2 + 7611^2 .

It is not a de Polignac number, because 90076221 - 2¹ = 90076219 is a prime.

It is a super-2 number, since 2×90076221² = 16227451179281682, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90076223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 121686 + ... + 122423.

It is an arithmetic number, because the mean of its divisors is an integer number (11107005).

Almost surely, 2^90076221 is an apocalyptic number.

It is an amenable number.

90076221 is a deficient number, since it is larger than the sum of its proper divisors (43207839).

90076221 is a wasteful number, since it uses less digits than its factorization.

90076221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244156 (or 244153 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 90076221 is about 9490.8493297492. The cubic root of 90076221 is about 448.2669490147.

The spelling of 90076221 in words is "ninety million, seventy-six thousand, two hundred twenty-one".