85338457 has 2 divisors, whose sum is σ = 85338458. Its totient is φ = 85338456.

The previous prime is 85338439. The next prime is 85338469. The reversal of 85338457 is 75483358.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69822736 + 15515721 = 8356^2 + 3939^2 .

It is a cyclic number.

It is not a de Polignac number, because 85338457 - 2²³ = 76949849 is a prime.

It is not a weakly prime, because it can be changed into another prime (85338497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42669228 + 42669229.

It is an arithmetic number, because the mean of its divisors is an integer number (42669229).

Almost surely, 2^85338457 is an apocalyptic number.

It is an amenable number.

85338457 is a deficient number, since it is larger than the sum of its proper divisors (1).

85338457 is an equidigital number, since it uses as much as digits as its factorization.

85338457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 403200, while the sum is 43.

The square root of 85338457 is about 9237.8816294646. The cubic root of 85338457 is about 440.2657777880.

The spelling of 85338457 in words is "eighty-five million, three hundred thirty-eight thousand, four hundred fifty-seven".