55776705 has 16 divisors (see below), whose sum is σ = 89631360. Its totient is φ = 29618048.

The previous prime is 55776703. The next prime is 55776709. The reversal of 55776705 is 50767755.

It is a cyclic number.

It is not a de Polignac number, because 55776705 - 2¹ = 55776703 is a prime.

It is a super-2 number, since 2×55776705² = 6222081641314050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55776701) 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, 4485 + ... + 11474.

It is an arithmetic number, because the mean of its divisors is an integer number (5601960).

Almost surely, 2^55776705 is an apocalyptic number.

It is an amenable number.

55776705 is a deficient number, since it is larger than the sum of its proper divisors (33854655).

55776705 is a wasteful number, since it uses less digits than its factorization.

55776705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16200.

The product of its (nonzero) digits is 257250, while the sum is 42.

The square root of 55776705 is about 7468.3803465008. The cubic root of 55776705 is about 382.0770496883.

The spelling of 55776705 in words is "fifty-five million, seven hundred seventy-six thousand, seven hundred five".