56447537 has 4 divisors (see below), whose sum is σ = 59418480. Its totient is φ = 53476596.

The previous prime is 56447527. The next prime is 56447539. The reversal of 56447537 is 73574465.

56447537 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, and also an emirpimes, since its reverse is a distinct semiprime: 73574465 = 5 ⋅14714893.

It is a cyclic number.

It is not a de Polignac number, because 56447537 - 2⁶ = 56447473 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56447494 and 56447503.

It is not an unprimeable number, because it can be changed into a prime (56447539) 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, 1485443 + ... + 1485480.

It is an arithmetic number, because the mean of its divisors is an integer number (14854620).

Almost surely, 2^56447537 is an apocalyptic number.

It is an amenable number.

56447537 is a deficient number, since it is larger than the sum of its proper divisors (2970943).

56447537 is a wasteful number, since it uses less digits than its factorization.

56447537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2970942.

The product of its digits is 352800, while the sum is 41.

The square root of 56447537 is about 7513.1575918518. The cubic root of 56447537 is about 383.6027091268.

The spelling of 56447537 in words is "fifty-six million, four hundred forty-seven thousand, five hundred thirty-seven".