55287747 has 6 divisors (see below), whose sum is σ = 79860092. Its totient is φ = 36858492.

The previous prime is 55287737. The next prime is 55287761. The reversal of 55287747 is 74778255.

It is not a de Polignac number, because 55287747 - 2¹⁰ = 55286723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55287737) 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, 3071533 + ... + 3071550.

Almost surely, 2^55287747 is an apocalyptic number.

55287747 is a deficient number, since it is larger than the sum of its proper divisors (24572345).

55287747 is a wasteful number, since it uses less digits than its factorization.

55287747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6143089 (or 6143086 counting only the distinct ones).

The product of its digits is 548800, while the sum is 45.

The square root of 55287747 is about 7435.5730781158. The cubic root of 55287747 is about 380.9572977954.

The spelling of 55287747 in words is "fifty-five million, two hundred eighty-seven thousand, seven hundred forty-seven".