9100000521 has 24 divisors (see below), whose sum is σ = 13247325000. Its totient is φ = 6019276032.

The previous prime is 9100000489. The next prime is 9100000529. The reversal of 9100000521 is 1250000019.

It can be written as a sum of positive squares in 4 ways, for example, as 162945225 + 8937055296 = 12765^2 + 94536^2 .

It is not a de Polignac number, because 9100000521 - 2⁵ = 9100000489 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9100000494 and 9100000503.

It is not an unprimeable number, because it can be changed into a prime (9100000529) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1403475 + ... + 1409943.

It is an arithmetic number, because the mean of its divisors is an integer number (551971875).

Almost surely, 2^9100000521 is an apocalyptic number.

It is an amenable number.

9100000521 is a deficient number, since it is larger than the sum of its proper divisors (4147324479).

9100000521 is a wasteful number, since it uses less digits than its factorization.

9100000521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7673 (or 7670 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

The square root of 9100000521 is about 95393.9228724765. The cubic root of 9100000521 is about 2087.7595185068.

The spelling of 9100000521 in words is "nine billion, one hundred million, five hundred twenty-one", and thus it is an aban number.