55647697 has 8 divisors (see below), whose sum is σ = 65649152. Its totient is φ = 46159200.

The previous prime is 55647653. The next prime is 55647727. The reversal of 55647697 is 79674655.

55647697 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55647697 - 2¹¹ = 55645649 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 55647697.

It is not an unprimeable number, because it can be changed into a prime (55657697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128004 + ... + 128437.

It is an arithmetic number, because the mean of its divisors is an integer number (8206144).

Almost surely, 2^55647697 is an apocalyptic number.

It is an amenable number.

55647697 is a deficient number, since it is larger than the sum of its proper divisors (10001455).

55647697 is a wasteful number, since it uses less digits than its factorization.

55647697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256479.

The product of its digits is 1587600, while the sum is 49.

The square root of 55647697 is about 7459.7384002390. The cubic root of 55647697 is about 381.7822489152.

The spelling of 55647697 in words is "fifty-five million, six hundred forty-seven thousand, six hundred ninety-seven".