55708247 has 24 divisors (see below), whose sum is σ = 69562800. Its totient is φ = 44343936.

The previous prime is 55708229. The next prime is 55708283. The reversal of 55708247 is 74280755.

It is not a de Polignac number, because 55708247 - 2⁶ = 55708183 is a prime.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 55708247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55708547) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48779 + ... + 49907.

It is an arithmetic number, because the mean of its divisors is an integer number (2898450).

Almost surely, 2^55708247 is an apocalyptic number.

55708247 is a deficient number, since it is larger than the sum of its proper divisors (13854553).

55708247 is a wasteful number, since it uses less digits than its factorization.

55708247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1215 (or 1208 counting only the distinct ones).

The product of its (nonzero) digits is 78400, while the sum is 38.

The square root of 55708247 is about 7463.7957501529. The cubic root of 55708247 is about 381.9206705512.

It can be divided in two parts, 55708 and 247, that added together give a palindrome (55955).

The spelling of 55708247 in words is "fifty-five million, seven hundred eight thousand, two hundred forty-seven".