85232261 has 2 divisors, whose sum is σ = 85232262. Its totient is φ = 85232260.

The previous prime is 85232243. The next prime is 85232263. The reversal of 85232261 is 16223258.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84456100 + 776161 = 9190^2 + 881^2 .

It is a cyclic number.

It is not a de Polignac number, because 85232261 - 2¹⁴ = 85215877 is a prime.

Together with 85232263, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85232263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42616130 + 42616131.

It is an arithmetic number, because the mean of its divisors is an integer number (42616131).

Almost surely, 2^85232261 is an apocalyptic number.

It is an amenable number.

85232261 is a deficient number, since it is larger than the sum of its proper divisors (1).

85232261 is an equidigital number, since it uses as much as digits as its factorization.

85232261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5760, while the sum is 29.

The square root of 85232261 is about 9232.1319856250. The cubic root of 85232261 is about 440.0830783209.

The spelling of 85232261 in words is "eighty-five million, two hundred thirty-two thousand, two hundred sixty-one".