55865473 has 4 divisors (see below), whose sum is σ = 55881520. Its totient is φ = 55849428.

The previous prime is 55865461. The next prime is 55865531. The reversal of 55865473 is 37456855.

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: 37456855 = 5 ⋅7491371.

It is a cyclic number.

It is not a de Polignac number, because 55865473 - 2⁹ = 55864961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55865273) 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, 363 + ... + 10576.

It is an arithmetic number, because the mean of its divisors is an integer number (13970380).

Almost surely, 2^55865473 is an apocalyptic number.

It is an amenable number.

55865473 is a deficient number, since it is larger than the sum of its proper divisors (16047).

55865473 is a wasteful number, since it uses less digits than its factorization.

55865473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16046.

The product of its digits is 504000, while the sum is 43.

The square root of 55865473 is about 7474.3209056074. The cubic root of 55865473 is about 382.2796327022.

The spelling of 55865473 in words is "fifty-five million, eight hundred sixty-five thousand, four hundred seventy-three".