89101261 has 2 divisors, whose sum is σ = 89101262. Its totient is φ = 89101260.

The previous prime is 89101231. The next prime is 89101343. The reversal of 89101261 is 16210198.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74132100 + 14969161 = 8610^2 + 3869^2 .

It is a cyclic number.

It is not a de Polignac number, because 89101261 - 2¹⁵ = 89068493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89101231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44550630 + 44550631.

It is an arithmetic number, because the mean of its divisors is an integer number (44550631).

Almost surely, 2^89101261 is an apocalyptic number.

It is an amenable number.

89101261 is a deficient number, since it is larger than the sum of its proper divisors (1).

89101261 is an equidigital number, since it uses as much as digits as its factorization.

89101261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 89101261 is about 9439.3464286464. The cubic root of 89101261 is about 446.6437729287.

The spelling of 89101261 in words is "eighty-nine million, one hundred one thousand, two hundred sixty-one".