85253557 has 2 divisors, whose sum is σ = 85253558. Its totient is φ = 85253556.

The previous prime is 85253549. The next prime is 85253573. The reversal of 85253557 is 75535258.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47872561 + 37380996 = 6919^2 + 6114^2 .

It is a cyclic number.

It is not a de Polignac number, because 85253557 - 2³ = 85253549 is a prime.

It is a Chen prime.

It is equal to p_4957555 and since 85253557 and 4957555 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85253527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42626778 + 42626779.

It is an arithmetic number, because the mean of its divisors is an integer number (42626779).

Almost surely, 2^85253557 is an apocalyptic number.

It is an amenable number.

85253557 is a deficient number, since it is larger than the sum of its proper divisors (1).

85253557 is an equidigital number, since it uses as much as digits as its factorization.

85253557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 210000, while the sum is 40.

The square root of 85253557 is about 9233.2852766499. The cubic root of 85253557 is about 440.1197280928.

The spelling of 85253557 in words is "eighty-five million, two hundred fifty-three thousand, five hundred fifty-seven".