853457745 has 64 divisors (see below), whose sum is σ = 1644134400. Its totient is φ = 377496000.

The previous prime is 853457741. The next prime is 853457753. The reversal of 853457745 is 547754358.

It is not a de Polignac number, because 853457745 - 2² = 853457741 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 853457694 and 853457703.

It is not an unprimeable number, because it can be changed into a prime (853457741) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 156820 + ... + 162170.

It is an arithmetic number, because the mean of its divisors is an integer number (25689600).

Almost surely, 2^853457745 is an apocalyptic number.

It is an amenable number.

853457745 is a deficient number, since it is larger than the sum of its proper divisors (790676655).

853457745 is a wasteful number, since it uses less digits than its factorization.

853457745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5411 (or 5397 counting only the distinct ones).

The product of its digits is 2352000, while the sum is 48.

The square root of 853457745 is about 29213.9991271308. Note that the first 3 decimals coincide. The cubic root of 853457745 is about 948.5509746890.

The spelling of 853457745 in words is "eight hundred fifty-three million, four hundred fifty-seven thousand, seven hundred forty-five".