55066385 has 16 divisors (see below), whose sum is σ = 74414592. Its totient is φ = 38755200.

The previous prime is 55066367. The next prime is 55066391. The reversal of 55066385 is 58366055.

It is not a de Polignac number, because 55066385 - 2⁸ = 55066129 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14444 + ... + 17853.

It is an arithmetic number, because the mean of its divisors is an integer number (4650912).

Almost surely, 2^55066385 is an apocalyptic number.

55066385 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

55066385 is a deficient number, since it is larger than the sum of its proper divisors (19348207).

55066385 is a wasteful number, since it uses less digits than its factorization.

55066385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32344.

The product of its (nonzero) digits is 108000, while the sum is 38.

The square root of 55066385 is about 7420.6728131619. The cubic root of 55066385 is about 380.4481900122.

The spelling of 55066385 in words is "fifty-five million, sixty-six thousand, three hundred eighty-five".