56732245021 has 4 divisors (see below), whose sum is σ = 57939314112. Its totient is φ = 55525175932.

The previous prime is 56732244971. The next prime is 56732245043. The reversal of 56732245021 is 12054223765.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12054223765 = 5 ⋅2410844753.

It is a cyclic number.

It is not a de Polignac number, because 56732245021 - 2¹⁹ = 56731720733 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 (56732245061) 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, 603534475 + ... + 603534568.

It is an arithmetic number, because the mean of its divisors is an integer number (14484828528).

Almost surely, 2^56732245021 is an apocalyptic number.

It is an amenable number.

56732245021 is a deficient number, since it is larger than the sum of its proper divisors (1207069091).

56732245021 is a wasteful number, since it uses less digits than its factorization.

56732245021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1207069090.

The product of its (nonzero) digits is 100800, while the sum is 37.

Adding to 56732245021 its reverse (12054223765), we get a palindrome (68786468786).

The spelling of 56732245021 in words is "fifty-six billion, seven hundred thirty-two million, two hundred forty-five thousand, twenty-one".