52128549 has 32 divisors (see below), whose sum is σ = 84833280. Its totient is φ = 31374000.

The previous prime is 52128493. The next prime is 52128551. The reversal of 52128549 is 94582125.

It is not a de Polignac number, because 52128549 - 2⁷ = 52128421 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52128049) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49074 + ... + 50124.

It is an arithmetic number, because the mean of its divisors is an integer number (2651040).

Almost surely, 2^52128549 is an apocalyptic number.

It is an amenable number.

52128549 is a deficient number, since it is larger than the sum of its proper divisors (32704731).

52128549 is a wasteful number, since it uses less digits than its factorization.

52128549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1238 (or 1232 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 52128549 is about 7220.0103185522. The cubic root of 52128549 is about 373.5584334635.

The spelling of 52128549 in words is "fifty-two million, one hundred twenty-eight thousand, five hundred forty-nine".