56674381 has 4 divisors (see below), whose sum is σ = 58628700. Its totient is φ = 54720064.

The previous prime is 56674367. The next prime is 56674403. The reversal of 56674381 is 18347665.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8940100 + 47734281 = 2990^2 + 6909^2 .

It is a cyclic number.

It is not a de Polignac number, because 56674381 - 2¹⁹ = 56150093 is a prime.

It is a super-2 number, since 2×56674381² = 6423970923466322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56674351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 977116 + ... + 977173.

It is an arithmetic number, because the mean of its divisors is an integer number (14657175).

Almost surely, 2^56674381 is an apocalyptic number.

It is an amenable number.

56674381 is a deficient number, since it is larger than the sum of its proper divisors (1954319).

56674381 is a wasteful number, since it uses less digits than its factorization.

56674381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1954318.

The product of its digits is 120960, while the sum is 40.

The square root of 56674381 is about 7528.2389042856. The cubic root of 56674381 is about 384.1158798313.

It can be divided in two parts, 566 and 74381, that added together give a palindrome (74947).

The spelling of 56674381 in words is "fifty-six million, six hundred seventy-four thousand, three hundred eighty-one".