90576857521 has 8 divisors (see below), whose sum is σ = 92826575424. Its totient is φ = 88333652400.

The previous prime is 90576857519. The next prime is 90576857557. The reversal of 90576857521 is 12575867509.

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 90576857521 - 2¹ = 90576857519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90576854521) 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, 1600030 + ... + 1655671.

It is an arithmetic number, because the mean of its divisors is an integer number (11603321928).

Almost surely, 2^90576857521 is an apocalyptic number.

It is an amenable number.

90576857521 is a deficient number, since it is larger than the sum of its proper divisors (2249717903).

90576857521 is a wasteful number, since it uses less digits than its factorization.

90576857521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3256391.

The product of its (nonzero) digits is 5292000, while the sum is 55.

The spelling of 90576857521 in words is "ninety billion, five hundred seventy-six million, eight hundred fifty-seven thousand, five hundred twenty-one".