52851457 has 4 divisors (see below), whose sum is σ = 53143636. Its totient is φ = 52559280.

The previous prime is 52851443. The next prime is 52851467. The reversal of 52851457 is 75415825.

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 8814961 + 44036496 = 2969^2 + 6636^2 .

It is a cyclic number.

It is not a de Polignac number, because 52851457 - 2¹⁹ = 52327169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52851467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145818 + ... + 146179.

It is an arithmetic number, because the mean of its divisors is an integer number (13285909).

Almost surely, 2^52851457 is an apocalyptic number.

It is an amenable number.

52851457 is a deficient number, since it is larger than the sum of its proper divisors (292179).

52851457 is a wasteful number, since it uses less digits than its factorization.

52851457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292178.

The product of its digits is 56000, while the sum is 37.

The square root of 52851457 is about 7269.9007558563. The cubic root of 52851457 is about 375.2773225657.

The spelling of 52851457 in words is "fifty-two million, eight hundred fifty-one thousand, four hundred fifty-seven".