85145377 has 2 divisors, whose sum is σ = 85145378. Its totient is φ = 85145376.

The previous prime is 85145369. The next prime is 85145443. The reversal of 85145377 is 77354158.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64705936 + 20439441 = 8044^2 + 4521^2 .

It is a cyclic number.

It is not a de Polignac number, because 85145377 - 2³ = 85145369 is a prime.

It is not a weakly prime, because it can be changed into another prime (85145777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42572688 + 42572689.

It is an arithmetic number, because the mean of its divisors is an integer number (42572689).

Almost surely, 2^85145377 is an apocalyptic number.

It is an amenable number.

85145377 is a deficient number, since it is larger than the sum of its proper divisors (1).

85145377 is an equidigital number, since it uses as much as digits as its factorization.

85145377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 117600, while the sum is 40.

The square root of 85145377 is about 9227.4252638534. The cubic root of 85145377 is about 439.9334902914.

The spelling of 85145377 in words is "eighty-five million, one hundred forty-five thousand, three hundred seventy-seven".