85154247 has 12 divisors (see below), whose sum is σ = 127556520. Its totient is φ = 56769336.

The previous prime is 85154243. The next prime is 85154261. The reversal of 85154247 is 74245158.

It is not a de Polignac number, because 85154247 - 2² = 85154243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85154243) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 174972 + ... + 175457.

It is an arithmetic number, because the mean of its divisors is an integer number (10629710).

Almost surely, 2^85154247 is an apocalyptic number.

85154247 is a deficient number, since it is larger than the sum of its proper divisors (42402273).

85154247 is an equidigital number, since it uses as much as digits as its factorization.

85154247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350444 (or 350432 counting only the distinct ones).

The product of its digits is 44800, while the sum is 36.

The square root of 85154247 is about 9227.9058837853. The cubic root of 85154247 is about 439.9487664175.

The spelling of 85154247 in words is "eighty-five million, one hundred fifty-four thousand, two hundred forty-seven".