56121323 has 4 divisors (see below), whose sum is σ = 56137368. Its totient is φ = 56105280.

The previous prime is 56121319. The next prime is 56121343. The reversal of 56121323 is 32312165.

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 56121323 - 2² = 56121319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56121343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 293 + ... + 10598.

It is an arithmetic number, because the mean of its divisors is an integer number (14034342).

Almost surely, 2^56121323 is an apocalyptic number.

56121323 is a deficient number, since it is larger than the sum of its proper divisors (16045).

56121323 is a wasteful number, since it uses less digits than its factorization.

56121323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16044.

The product of its digits is 1080, while the sum is 23.

The square root of 56121323 is about 7491.4166217078. The cubic root of 56121323 is about 382.8623260193.

Adding to 56121323 its reverse (32312165), we get a palindrome (88433488).

The spelling of 56121323 in words is "fifty-six million, one hundred twenty-one thousand, three hundred twenty-three".