85012553 has 2 divisors, whose sum is σ = 85012554. Its totient is φ = 85012552.

The previous prime is 85012513. The next prime is 85012559. The reversal of 85012553 is 35521058.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84143929 + 868624 = 9173^2 + 932^2 .

It is a cyclic number.

It is not a de Polignac number, because 85012553 - 2⁸ = 85012297 is a prime.

It is not a weakly prime, because it can be changed into another prime (85012559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42506276 + 42506277.

It is an arithmetic number, because the mean of its divisors is an integer number (42506277).

Almost surely, 2^85012553 is an apocalyptic number.

It is an amenable number.

85012553 is a deficient number, since it is larger than the sum of its proper divisors (1).

85012553 is an equidigital number, since it uses as much as digits as its factorization.

85012553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 85012553 is about 9220.2252141691. The cubic root of 85012553 is about 439.7046106221.

The spelling of 85012553 in words is "eighty-five million, twelve thousand, five hundred fifty-three".