9057121621 has 8 divisors (see below), whose sum is σ = 9091555200. Its totient is φ = 9022746000.

The previous prime is 9057121589. The next prime is 9057121639. The reversal of 9057121621 is 1261217509.

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 9057121621 - 2⁵ = 9057121589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9057121681) 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, 312496 + ... + 340246.

It is an arithmetic number, because the mean of its divisors is an integer number (1136444400).

Almost surely, 2^9057121621 is an apocalyptic number.

It is an amenable number.

9057121621 is a deficient number, since it is larger than the sum of its proper divisors (34433579).

9057121621 is a wasteful number, since it uses less digits than its factorization.

9057121621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28979.

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 9057121621 is about 95168.9110003892. The cubic root of 9057121621 is about 2084.4752034111.

The spelling of 9057121621 in words is "nine billion, fifty-seven million, one hundred twenty-one thousand, six hundred twenty-one".