55863947 has 4 divisors (see below), whose sum is σ = 57790320. Its totient is φ = 53937576.

The previous prime is 55863943. The next prime is 55863967. The reversal of 55863947 is 74936855.

55863947 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 a cyclic number.

It is not a de Polignac number, because 55863947 - 2² = 55863943 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55863943) 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, 963143 + ... + 963200.

It is an arithmetic number, because the mean of its divisors is an integer number (14447580).

Almost surely, 2^55863947 is an apocalyptic number.

55863947 is a deficient number, since it is larger than the sum of its proper divisors (1926373).

55863947 is a wasteful number, since it uses less digits than its factorization.

55863947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1926372.

The product of its digits is 907200, while the sum is 47.

The square root of 55863947 is about 7474.2188220576. The cubic root of 55863947 is about 382.2761519355.

The spelling of 55863947 in words is "fifty-five million, eight hundred sixty-three thousand, nine hundred forty-seven".