845615252 has 12 divisors (see below), whose sum is σ = 1484497140. Its totient is φ = 421473216.

The previous prime is 845615237. The next prime is 845615261. The reversal of 845615252 is 252516548.

It can be written as a sum of positive squares in 2 ways, for example, as 158860816 + 686754436 = 12604^2 + 26206^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 332177 + ... + 334712.

It is an arithmetic number, because the mean of its divisors is an integer number (123708095).

Almost surely, 2^845615252 is an apocalyptic number.

It is an amenable number.

845615252 is a deficient number, since it is larger than the sum of its proper divisors (638881888).

845615252 is a wasteful number, since it uses less digits than its factorization.

845615252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667210 (or 667208 counting only the distinct ones).

The product of its digits is 96000, while the sum is 38.

The square root of 845615252 is about 29079.4644379844. The cubic root of 845615252 is about 945.6365920550.

The spelling of 845615252 in words is "eight hundred forty-five million, six hundred fifteen thousand, two hundred fifty-two".