89521355291 has 2 divisors, whose sum is σ = 89521355292. Its totient is φ = 89521355290.

The previous prime is 89521355257. The next prime is 89521355299. The reversal of 89521355291 is 19255312598.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89521355291 is a prime.

It is not a weakly prime, because it can be changed into another prime (89521355299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44760677645 + 44760677646.

It is an arithmetic number, because the mean of its divisors is an integer number (44760677646).

Almost surely, 2^89521355291 is an apocalyptic number.

89521355291 is a deficient number, since it is larger than the sum of its proper divisors (1).

89521355291 is an equidigital number, since it uses as much as digits as its factorization.

89521355291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 972000, while the sum is 50.

The spelling of 89521355291 in words is "eighty-nine billion, five hundred twenty-one million, three hundred fifty-five thousand, two hundred ninety-one".