852521155 has 24 divisors (see below), whose sum is σ = 1049836032. Its totient is φ = 664505856.

The previous prime is 852521129. The next prime is 852521167. The reversal of 852521155 is 551125258.

It is not a de Polignac number, because 852521155 - 2⁷ = 852521027 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 852521155.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6712702 + ... + 6712828.

It is an arithmetic number, because the mean of its divisors is an integer number (43743168).

Almost surely, 2^852521155 is an apocalyptic number.

852521155 is a deficient number, since it is larger than the sum of its proper divisors (197314877).

852521155 is a wasteful number, since it uses less digits than its factorization.

852521155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463 (or 354 counting only the distinct ones).

The product of its digits is 20000, while the sum is 34.

The square root of 852521155 is about 29197.9649119592. The cubic root of 852521155 is about 948.2038657116.

The spelling of 852521155 in words is "eight hundred fifty-two million, five hundred twenty-one thousand, one hundred fifty-five".