85120452 has 36 divisors (see below), whose sum is σ = 222587820. Its totient is φ = 27394752.

The previous prime is 85120381. The next prime is 85120463. The reversal of 85120452 is 25402158.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 64545156 + 20575296 = 8034^2 + 4536^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39723 + ... + 41810.

It is an arithmetic number, because the mean of its divisors is an integer number (6182995).

Almost surely, 2^85120452 is an apocalyptic number.

It is an amenable number.

85120452 is an abundant number, since it is smaller than the sum of its proper divisors (137467368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85120452 is a wasteful number, since it uses less digits than its factorization.

85120452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81572 (or 81567 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 85120452 is about 9226.0745715608. The cubic root of 85120452 is about 439.8905581801.

The spelling of 85120452 in words is "eighty-five million, one hundred twenty thousand, four hundred fifty-two".