89485502521 has 2 divisors, whose sum is σ = 89485502522. Its totient is φ = 89485502520.

The previous prime is 89485502497. The next prime is 89485502531. The reversal of 89485502521 is 12520558498.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86283187600 + 3202314921 = 293740^2 + 56589^2 .

It is a cyclic number.

It is not a de Polignac number, because 89485502521 - 2²⁹ = 88948631609 is a prime.

It is a super-2 number, since 2×89485502521² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (89485502531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44742751260 + 44742751261.

It is an arithmetic number, because the mean of its divisors is an integer number (44742751261).

Almost surely, 2^89485502521 is an apocalyptic number.

It is an amenable number.

89485502521 is a deficient number, since it is larger than the sum of its proper divisors (1).

89485502521 is an equidigital number, since it uses as much as digits as its factorization.

89485502521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152000, while the sum is 49.

The spelling of 89485502521 in words is "eighty-nine billion, four hundred eighty-five million, five hundred two thousand, five hundred twenty-one".