56420111 has 4 divisors (see below), whose sum is σ = 61549224. Its totient is φ = 51291000.

The previous prime is 56420099. The next prime is 56420149. The reversal of 56420111 is 11102465.

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 56420111 - 2⁶ = 56420047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56420711) 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, 2564540 + ... + 2564561.

It is an arithmetic number, because the mean of its divisors is an integer number (15387306).

Almost surely, 2^56420111 is an apocalyptic number.

56420111 is a deficient number, since it is larger than the sum of its proper divisors (5129113).

56420111 is a wasteful number, since it uses less digits than its factorization.

56420111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5129112.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 56420111 is about 7511.3321721250. The cubic root of 56420111 is about 383.5405724195.

Adding to 56420111 its reverse (11102465), we get a palindrome (67522576).

The spelling of 56420111 in words is "fifty-six million, four hundred twenty thousand, one hundred eleven".