852991137 has 24 divisors (see below), whose sum is σ = 1252592640. Its totient is φ = 559231200.

The previous prime is 852991127. The next prime is 852991141. The reversal of 852991137 is 731199258.

852991137 is a `hidden beast` number, since 8 + 529 + 9 + 113 + 7 = 666.

It is not a de Polignac number, because 852991137 - 2⁸ = 852990881 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 852991092 and 852991101.

It is not an unprimeable number, because it can be changed into a prime (852991127) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 693439 + ... + 694667.

It is an arithmetic number, because the mean of its divisors is an integer number (52191360).

Almost surely, 2^852991137 is an apocalyptic number.

It is an amenable number.

852991137 is a deficient number, since it is larger than the sum of its proper divisors (399601503).

852991137 is a wasteful number, since it uses less digits than its factorization.

852991137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2453 (or 2450 counting only the distinct ones).

The product of its digits is 136080, while the sum is 45.

The square root of 852991137 is about 29206.0120009562. The cubic root of 852991137 is about 948.3780771785.

It can be divided in two parts, 85299 and 1137, that added together give a square (86436 = 294²).

The spelling of 852991137 in words is "eight hundred fifty-two million, nine hundred ninety-one thousand, one hundred thirty-seven".