85581274 has 8 divisors (see below), whose sum is σ = 128849940. Its totient is φ = 42631296.

The previous prime is 85581271. The next prime is 85581277. The reversal of 85581274 is 47218558.

It is an interprime number because it is at equal distance from previous prime (85581271) and next prime (85581277).

It can be written as a sum of positive squares in 2 ways, for example, as 85433049 + 148225 = 9243^2 + 385^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (85581271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78999 + ... + 80074.

Almost surely, 2^85581274 is an apocalyptic number.

85581274 is a deficient number, since it is larger than the sum of its proper divisors (43268666).

85581274 is a wasteful number, since it uses less digits than its factorization.

85581274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159344.

The product of its digits is 89600, while the sum is 40.

The square root of 85581274 is about 9251.0147551498. The cubic root of 85581274 is about 440.6829511090.

The spelling of 85581274 in words is "eighty-five million, five hundred eighty-one thousand, two hundred seventy-four".