53278567 has 4 divisors (see below), whose sum is σ = 53365536. Its totient is φ = 53191600.

The previous prime is 53278549. The next prime is 53278571. The reversal of 53278567 is 76587235.

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

It is a cyclic number.

It is not a de Polignac number, because 53278567 - 2⁷ = 53278439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53078567) 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, 42559 + ... + 43792.

It is an arithmetic number, because the mean of its divisors is an integer number (13341384).

Almost surely, 2^53278567 is an apocalyptic number.

53278567 is a deficient number, since it is larger than the sum of its proper divisors (86969).

53278567 is an equidigital number, since it uses as much as digits as its factorization.

53278567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86968.

The product of its digits is 352800, while the sum is 43.

The square root of 53278567 is about 7299.2168758025. The cubic root of 53278567 is about 376.2855246936.

The spelling of 53278567 in words is "fifty-three million, two hundred seventy-eight thousand, five hundred sixty-seven".