55677247 has 4 divisors (see below), whose sum is σ = 56170080. Its totient is φ = 55184416.

The previous prime is 55677199. The next prime is 55677253. The reversal of 55677247 is 74277655.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55677247 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 (55677257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 246247 + ... + 246472.

It is an arithmetic number, because the mean of its divisors is an integer number (14042520).

Almost surely, 2^55677247 is an apocalyptic number.

55677247 is a deficient number, since it is larger than the sum of its proper divisors (492833).

55677247 is a wasteful number, since it uses less digits than its factorization.

55677247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492832.

The product of its digits is 411600, while the sum is 43.

The square root of 55677247 is about 7461.7187698278. The cubic root of 55677247 is about 381.8498148687.

The spelling of 55677247 in words is "fifty-five million, six hundred seventy-seven thousand, two hundred forty-seven".