89612528531 has 2 divisors, whose sum is σ = 89612528532. Its totient is φ = 89612528530.

The previous prime is 89612528503. The next prime is 89612528563. The reversal of 89612528531 is 13582521698.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 89612528531 - 2³⁴ = 72432659347 is a prime.

It is a super-2 number, since 2×89612528531² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 89612528531.

It is not a weakly prime, because it can be changed into another prime (89612525531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44806264265 + 44806264266.

It is an arithmetic number, because the mean of its divisors is an integer number (44806264266).

Almost surely, 2^89612528531 is an apocalyptic number.

89612528531 is a deficient number, since it is larger than the sum of its proper divisors (1).

89612528531 is an equidigital number, since it uses as much as digits as its factorization.

89612528531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1036800, while the sum is 50.

The spelling of 89612528531 in words is "eighty-nine billion, six hundred twelve million, five hundred twenty-eight thousand, five hundred thirty-one".