53443057 has 4 divisors (see below), whose sum is σ = 53522676. Its totient is φ = 53363440.

The previous prime is 53442989. The next prime is 53443063. The reversal of 53443057 is 75034435.

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 35473936 + 17969121 = 5956^2 + 4239^2 .

It is a cyclic number.

It is not a de Polignac number, because 53443057 - 2¹⁵ = 53410289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53443457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38794 + ... + 40147.

It is an arithmetic number, because the mean of its divisors is an integer number (13380669).

Almost surely, 2^53443057 is an apocalyptic number.

It is an amenable number.

53443057 is a deficient number, since it is larger than the sum of its proper divisors (79619).

53443057 is an equidigital number, since it uses as much as digits as its factorization.

53443057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79618.

The product of its (nonzero) digits is 25200, while the sum is 31.

The square root of 53443057 is about 7310.4758395059. The cubic root of 53443057 is about 376.6723695415.

The spelling of 53443057 in words is "fifty-three million, four hundred forty-three thousand, fifty-seven".