85474121 has 4 divisors (see below), whose sum is σ = 85513092. Its totient is φ = 85435152.

The previous prime is 85474093. The next prime is 85474127. The reversal of 85474121 is 12147458.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29822521 + 55651600 = 5461^2 + 7460^2 .

It is a cyclic number.

It is not a de Polignac number, because 85474121 - 2¹⁸ = 85211977 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85474127) 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, 15986 + ... + 20651.

It is an arithmetic number, because the mean of its divisors is an integer number (21378273).

Almost surely, 2^85474121 is an apocalyptic number.

It is an amenable number.

85474121 is a deficient number, since it is larger than the sum of its proper divisors (38971).

85474121 is a wasteful number, since it uses less digits than its factorization.

85474121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38970.

The product of its digits is 8960, while the sum is 32.

The square root of 85474121 is about 9245.2215224947. The cubic root of 85474121 is about 440.4989536081.

The spelling of 85474121 in words is "eighty-five million, four hundred seventy-four thousand, one hundred twenty-one".