56547407 has 4 divisors (see below), whose sum is σ = 64625616. Its totient is φ = 48469200.

The previous prime is 56547391. The next prime is 56547443. The reversal of 56547407 is 70474565.

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

It is a cyclic number.

It is not a de Polignac number, because 56547407 - 2⁴ = 56547391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56547497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4039094 + ... + 4039107.

It is an arithmetic number, because the mean of its divisors is an integer number (16156404).

Almost surely, 2^56547407 is an apocalyptic number.

56547407 is a deficient number, since it is larger than the sum of its proper divisors (8078209).

56547407 is an equidigital number, since it uses as much as digits as its factorization.

56547407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8078208.

The product of its (nonzero) digits is 117600, while the sum is 38.

The square root of 56547407 is about 7519.8009947072. The cubic root of 56547407 is about 383.8288059781.

The spelling of 56547407 in words is "fifty-six million, five hundred forty-seven thousand, four hundred seven".