56137945 has 4 divisors (see below), whose sum is σ = 67365540. Its totient is φ = 44910352.

The previous prime is 56137933. The next prime is 56137957. The reversal of 56137945 is 54973165.

56137945 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.

It is an interprime number because it is at equal distance from previous prime (56137933) and next prime (56137957).

It can be written as a sum of positive squares in 2 ways, for example, as 15280281 + 40857664 = 3909^2 + 6392^2 .

It is a cyclic number.

It is not a de Polignac number, because 56137945 - 2¹¹ = 56135897 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 56137898 and 56137907.

It is an unprimeable number.

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

It is an upside-down number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5613790 + ... + 5613799.

It is an arithmetic number, because the mean of its divisors is an integer number (16841385).

Almost surely, 2^56137945 is an apocalyptic number.

It is an amenable number.

56137945 is a deficient number, since it is larger than the sum of its proper divisors (11227595).

56137945 is a wasteful number, since it uses less digits than its factorization.

56137945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11227594.

The product of its digits is 113400, while the sum is 40.

The square root of 56137945 is about 7492.5259425644. The cubic root of 56137945 is about 382.9001209788.

The spelling of 56137945 in words is "fifty-six million, one hundred thirty-seven thousand, nine hundred forty-five".