56542331 has 4 divisors (see below), whose sum is σ = 57070872. Its totient is φ = 56013792.

The previous prime is 56542307. The next prime is 56542393. The reversal of 56542331 is 13324565.

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 56542331 - 2⁶ = 56542267 is a prime.

It is a super-2 number, since 2×56542331² = 6394070389827122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56542294 and 56542303.

It is not an unprimeable number, because it can be changed into a prime (56542231) 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, 264110 + ... + 264323.

It is an arithmetic number, because the mean of its divisors is an integer number (14267718).

Almost surely, 2^56542331 is an apocalyptic number.

56542331 is a deficient number, since it is larger than the sum of its proper divisors (528541).

56542331 is a wasteful number, since it uses less digits than its factorization.

56542331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528540.

The product of its digits is 10800, while the sum is 29.

The square root of 56542331 is about 7519.4634782011. The cubic root of 56542331 is about 383.8173207870.

Adding to 56542331 its reverse (13324565), we get a palindrome (69866896).

The spelling of 56542331 in words is "fifty-six million, five hundred forty-two thousand, three hundred thirty-one".