56129873 has 4 divisors (see below), whose sum is σ = 56166000. Its totient is φ = 56093748.

The previous prime is 56129837. The next prime is 56129881. The reversal of 56129873 is 37892165.

56129873 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 56129873 - 2⁸ = 56129617 is a prime.

It is a super-2 number, since 2×56129873² = 6301125285992258, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 56129873.

It is not an unprimeable number, because it can be changed into a prime (56129803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15623 + ... + 18876.

It is an arithmetic number, because the mean of its divisors is an integer number (14041500).

Almost surely, 2^56129873 is an apocalyptic number.

It is an amenable number.

56129873 is a deficient number, since it is larger than the sum of its proper divisors (36127).

56129873 is a wasteful number, since it uses less digits than its factorization.

56129873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36126.

The product of its digits is 90720, while the sum is 41.

The square root of 56129873 is about 7491.9872530591. The cubic root of 56129873 is about 382.8817678671.

The spelling of 56129873 in words is "fifty-six million, one hundred twenty-nine thousand, eight hundred seventy-three".