56402548291 has 4 divisors (see below), whose sum is σ = 56411204184. Its totient is φ = 56393892400.

The previous prime is 56402548277. The next prime is 56402548313. The reversal of 56402548291 is 19284520465.

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 56402548291 - 2¹⁷ = 56402417219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56402548691) 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, 4318165 + ... + 4331206.

It is an arithmetic number, because the mean of its divisors is an integer number (14102801046).

Almost surely, 2^56402548291 is an apocalyptic number.

56402548291 is a deficient number, since it is larger than the sum of its proper divisors (8655893).

56402548291 is an equidigital number, since it uses as much as digits as its factorization.

56402548291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8655892.

The product of its (nonzero) digits is 691200, while the sum is 46.

The spelling of 56402548291 in words is "fifty-six billion, four hundred two million, five hundred forty-eight thousand, two hundred ninety-one".