56544421 has 8 divisors (see below), whose sum is σ = 57204864. Its totient is φ = 55887840.

The previous prime is 56544407. The next prime is 56544463. The reversal of 56544421 is 12444565.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56544421 - 2⁹ = 56543909 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 (56544491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36366 + ... + 37888.

It is an arithmetic number, because the mean of its divisors is an integer number (7150608).

Almost surely, 2^56544421 is an apocalyptic number.

It is an amenable number.

56544421 is a deficient number, since it is larger than the sum of its proper divisors (660443).

56544421 is a wasteful number, since it uses less digits than its factorization.

56544421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1931.

The product of its digits is 19200, while the sum is 31.

The square root of 56544421 is about 7519.6024495980. The cubic root of 56544421 is about 383.8220498004.

Adding to 56544421 its reverse (12444565), we get a palindrome (68988986).

It can be divided in two parts, 56544 and 421, that added together give a palindrome (56965).

The spelling of 56544421 in words is "fifty-six million, five hundred forty-four thousand, four hundred twenty-one".