85237519 has 2 divisors, whose sum is σ = 85237520. Its totient is φ = 85237518.

The previous prime is 85237487. The next prime is 85237549. The reversal of 85237519 is 91573258.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85237519 - 2⁵ = 85237487 is a prime.

It is a super-2 number, since 2×85237519² = 14530869290550722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85237549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42618759 + 42618760.

It is an arithmetic number, because the mean of its divisors is an integer number (42618760).

Almost surely, 2^85237519 is an apocalyptic number.

85237519 is a deficient number, since it is larger than the sum of its proper divisors (1).

85237519 is an equidigital number, since it uses as much as digits as its factorization.

85237519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75600, while the sum is 40.

The square root of 85237519 is about 9232.4167475261. The cubic root of 85237519 is about 440.0921277474.

The spelling of 85237519 in words is "eighty-five million, two hundred thirty-seven thousand, five hundred nineteen".