56401133 has 4 divisors (see below), whose sum is σ = 56831808. Its totient is φ = 55970460.

The previous prime is 56401123. The next prime is 56401141. The reversal of 56401133 is 33110465.

It is a happy number.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56401133 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 56401099 and 56401108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56401123) 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, 215141 + ... + 215402.

It is an arithmetic number, because the mean of its divisors is an integer number (14207952).

Almost surely, 2^56401133 is an apocalyptic number.

It is an amenable number.

56401133 is a deficient number, since it is larger than the sum of its proper divisors (430675).

56401133 is a wasteful number, since it uses less digits than its factorization.

56401133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430674.

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

The square root of 56401133 is about 7510.0687746518. The cubic root of 56401133 is about 383.4975638236.

Adding to 56401133 its reverse (33110465), we get a palindrome (89511598).

The spelling of 56401133 in words is "fifty-six million, four hundred one thousand, one hundred thirty-three".