85017437 has 2 divisors, whose sum is σ = 85017438. Its totient is φ = 85017436.

The previous prime is 85017431. The next prime is 85017451. The reversal of 85017437 is 73471058.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73633561 + 11383876 = 8581^2 + 3374^2 .

It is a cyclic number.

It is not a de Polignac number, because 85017437 - 2⁴ = 85017421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85017397 and 85017406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85017431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42508718 + 42508719.

It is an arithmetic number, because the mean of its divisors is an integer number (42508719).

Almost surely, 2^85017437 is an apocalyptic number.

It is an amenable number.

85017437 is a deficient number, since it is larger than the sum of its proper divisors (1).

85017437 is an equidigital number, since it uses as much as digits as its factorization.

85017437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 85017437 is about 9220.4900628980. The cubic root of 85017437 is about 439.7130308539.

The spelling of 85017437 in words is "eighty-five million, seventeen thousand, four hundred thirty-seven".