52428645 has 12 divisors (see below), whose sum is σ = 90876396. Its totient is φ = 27961920.

The previous prime is 52428637. The next prime is 52428659. The reversal of 52428645 is 54682425.

It is a happy number.

52428645 is a `hidden beast` number, since 5 + 2 + 4 + 2 + 8 + 645 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 8749764 + 43678881 = 2958^2 + 6609^2 .

It is not a de Polignac number, because 52428645 - 2³ = 52428637 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 582496 + ... + 582585.

It is an arithmetic number, because the mean of its divisors is an integer number (7573033).

Almost surely, 2^52428645 is an apocalyptic number.

It is an amenable number.

52428645 is a deficient number, since it is larger than the sum of its proper divisors (38447751).

52428645 is a wasteful number, since it uses less digits than its factorization.

52428645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1165092 (or 1165089 counting only the distinct ones).

The product of its digits is 76800, while the sum is 36.

The square root of 52428645 is about 7240.7627360659. The cubic root of 52428645 is about 374.2739016573.

The spelling of 52428645 in words is "fifty-two million, four hundred twenty-eight thousand, six hundred forty-five".