52257445 has 4 divisors (see below), whose sum is σ = 62708940. Its totient is φ = 41805952.

The previous prime is 52257437. The next prime is 52257451. The reversal of 52257445 is 54475225.

52257445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 37380996 + 14876449 = 6114^2 + 3857^2 .

It is a cyclic number.

It is not a de Polignac number, because 52257445 - 2³ = 52257437 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 52257445.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 5225740 + ... + 5225749.

It is an arithmetic number, because the mean of its divisors is an integer number (15677235).

Almost surely, 2^52257445 is an apocalyptic number.

It is an amenable number.

52257445 is a deficient number, since it is larger than the sum of its proper divisors (10451495).

52257445 is a wasteful number, since it uses less digits than its factorization.

52257445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10451494.

The product of its digits is 56000, while the sum is 34.

The square root of 52257445 is about 7228.9311104755. The cubic root of 52257445 is about 373.8660739464.

The spelling of 52257445 in words is "fifty-two million, two hundred fifty-seven thousand, four hundred forty-five".