56340139 has 4 divisors (see below), whose sum is σ = 56355256. Its totient is φ = 56325024.

The previous prime is 56340131. The next prime is 56340157. The reversal of 56340139 is 93104365.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 93104365 = 5 ⋅18620873.

It is a cyclic number.

It is not a de Polignac number, because 56340139 - 2³ = 56340131 is a prime.

It is a super-2 number, since 2×56340139² = 6348422525078642, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56340139.

It is not an unprimeable number, because it can be changed into a prime (56340131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2452 + ... + 10894.

It is an arithmetic number, because the mean of its divisors is an integer number (14088814).

Almost surely, 2^56340139 is an apocalyptic number.

56340139 is a deficient number, since it is larger than the sum of its proper divisors (15117).

56340139 is an equidigital number, since it uses as much as digits as its factorization.

56340139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15116.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 56340139 is about 7506.0068611746. The cubic root of 56340139 is about 383.3592717588.

The spelling of 56340139 in words is "fifty-six million, three hundred forty thousand, one hundred thirty-nine".