55394865 has 12 divisors (see below), whose sum is σ = 96017844. Its totient is φ = 29543904.

The previous prime is 55394851. The next prime is 55394903. The reversal of 55394865 is 56849355.

55394865 is a `hidden beast` number, since 553 + 94 + 8 + 6 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 8156736 + 47238129 = 2856^2 + 6873^2 .

It is not a de Polignac number, because 55394865 - 2⁴ = 55394849 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1230997 = 55394865 / (5 + 5 + 3 + 9 + 4 + 8 + 6 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 55394865.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 615454 + ... + 615543.

It is an arithmetic number, because the mean of its divisors is an integer number (8001487).

Almost surely, 2^55394865 is an apocalyptic number.

It is an amenable number.

55394865 is a deficient number, since it is larger than the sum of its proper divisors (40622979).

55394865 is a wasteful number, since it uses less digits than its factorization.

55394865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231008 (or 1231005 counting only the distinct ones).

The product of its digits is 648000, while the sum is 45.

The square root of 55394865 is about 7442.7726688379. The cubic root of 55394865 is about 381.2031693800.

It can be divided in two parts, 5539 and 4865, that added together give a square (10404 = 102²).

The spelling of 55394865 in words is "fifty-five million, three hundred ninety-four thousand, eight hundred sixty-five".