55355847 has 4 divisors (see below), whose sum is σ = 73807800. Its totient is φ = 36903896.

The previous prime is 55355837. The next prime is 55355851. The reversal of 55355847 is 74855355.

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

It is a cyclic number.

It is not a de Polignac number, because 55355847 - 2⁷ = 55355719 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55355799 and 55355808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55355837) 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, 9225972 + ... + 9225977.

It is an arithmetic number, because the mean of its divisors is an integer number (18451950).

Almost surely, 2^55355847 is an apocalyptic number.

55355847 is a deficient number, since it is larger than the sum of its proper divisors (18451953).

55355847 is a wasteful number, since it uses less digits than its factorization.

55355847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18451952.

The product of its digits is 420000, while the sum is 42.

The square root of 55355847 is about 7440.1510065321. The cubic root of 55355847 is about 381.1136467693.

The spelling of 55355847 in words is "fifty-five million, three hundred fifty-five thousand, eight hundred forty-seven".