89155247 has 2 divisors, whose sum is σ = 89155248. Its totient is φ = 89155246.

The previous prime is 89155243. The next prime is 89155249. The reversal of 89155247 is 74255198.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 89155247 - 2² = 89155243 is a prime.

Together with 89155249, 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 (89155243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44577623 + 44577624.

It is an arithmetic number, because the mean of its divisors is an integer number (44577624).

Almost surely, 2^89155247 is an apocalyptic number.

89155247 is a deficient number, since it is larger than the sum of its proper divisors (1).

89155247 is an equidigital number, since it uses as much as digits as its factorization.

89155247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 100800, while the sum is 41.

The square root of 89155247 is about 9442.2056215696. The cubic root of 89155247 is about 446.7339611117.

The spelling of 89155247 in words is "eighty-nine million, one hundred fifty-five thousand, two hundred forty-seven".