55899785 has 16 divisors (see below), whose sum is σ = 70504896. Its totient is φ = 42493248.

The previous prime is 55899751. The next prime is 55899787. The reversal of 55899785 is 58799855.

It is a cyclic number.

It is not a de Polignac number, because 55899785 - 2¹⁰ = 55898761 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55899785.

It is not an unprimeable number, because it can be changed into a prime (55899787) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4442 + ... + 11468.

It is an arithmetic number, because the mean of its divisors is an integer number (4406556).

Almost surely, 2^55899785 is an apocalyptic number.

It is an amenable number.

55899785 is a deficient number, since it is larger than the sum of its proper divisors (14605111).

55899785 is a wasteful number, since it uses less digits than its factorization.

55899785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7112.

The product of its digits is 4536000, while the sum is 56.

The square root of 55899785 is about 7476.6158788586. The cubic root of 55899785 is about 382.3578807599.

The spelling of 55899785 in words is "fifty-five million, eight hundred ninety-nine thousand, seven hundred eighty-five".