52128522 has 40 divisors (see below), whose sum is σ = 117635232. Its totient is φ = 17253000.

The previous prime is 52128493. The next prime is 52128551. The reversal of 52128522 is 22582125.

52128522 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (52128493) and next prime (52128551).

It is a Harshad number since it is a multiple of its sum of digits (27).

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 19 ways as a sum of consecutive naturals, for example, 23397 + ... + 25527.

Almost surely, 2^52128522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52128522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58817616).

52128522 is an abundant number, since it is smaller than the sum of its proper divisors (65506710).

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

52128522 is a wasteful number, since it uses less digits than its factorization.

52128522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2296 (or 2287 counting only the distinct ones).

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

The square root of 52128522 is about 7220.0084487485. The cubic root of 52128522 is about 373.5583689686.

It can be divided in two parts, 52128 and 522, that added together give a triangular number (52650 = T₃₂₄).

The spelling of 52128522 in words is "fifty-two million, one hundred twenty-eight thousand, five hundred twenty-two".