89261257 has 2 divisors, whose sum is σ = 89261258. Its totient is φ = 89261256.

The previous prime is 89261233. The next prime is 89261269. The reversal of 89261257 is 75216298.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88906041 + 355216 = 9429^2 + 596^2 .

It is a cyclic number.

It is not a de Polignac number, because 89261257 - 2¹⁹ = 88736969 is a prime.

It is not a weakly prime, because it can be changed into another prime (89261357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44630628 + 44630629.

It is an arithmetic number, because the mean of its divisors is an integer number (44630629).

Almost surely, 2^89261257 is an apocalyptic number.

It is an amenable number.

89261257 is a deficient number, since it is larger than the sum of its proper divisors (1).

89261257 is an equidigital number, since it uses as much as digits as its factorization.

89261257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 40.

The square root of 89261257 is about 9447.8175786792. The cubic root of 89261257 is about 446.9109539070.

The spelling of 89261257 in words is "eighty-nine million, two hundred sixty-one thousand, two hundred fifty-seven".