56009438 has 4 divisors (see below), whose sum is σ = 84014160. Its totient is φ = 28004718.

The previous prime is 56009423. The next prime is 56009461. The reversal of 56009438 is 83490065.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 56009398 and 56009407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14002358 + ... + 14002361.

It is an arithmetic number, because the mean of its divisors is an integer number (21003540).

Almost surely, 2^56009438 is an apocalyptic number.

56009438 is a deficient number, since it is larger than the sum of its proper divisors (28004722).

56009438 is a wasteful number, since it uses less digits than its factorization.

56009438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28004721.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 56009438 is about 7483.9453498806. The cubic root of 56009438 is about 382.6077284954.

The spelling of 56009438 in words is "fifty-six million, nine thousand, four hundred thirty-eight".