55816407 has 6 divisors (see below), whose sum is σ = 80623712. Its totient is φ = 37210932.

The previous prime is 55816391. The next prime is 55816417. The reversal of 55816407 is 70461855.

55816407 is a `hidden beast` number, since 5 + 5 + 8 + 1 + 640 + 7 = 666.

It is not a de Polignac number, because 55816407 - 2⁴ = 55816391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55816417) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3100903 + ... + 3100920.

Almost surely, 2^55816407 is an apocalyptic number.

55816407 is a deficient number, since it is larger than the sum of its proper divisors (24807305).

55816407 is a wasteful number, since it uses less digits than its factorization.

55816407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6201829 (or 6201826 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 55816407 is about 7471.0378797059. The cubic root of 55816407 is about 382.1676826582.

The spelling of 55816407 in words is "fifty-five million, eight hundred sixteen thousand, four hundred seven".