55712447 has 4 divisors (see below), whose sum is σ = 63671376. Its totient is φ = 47753520.

The previous prime is 55712431. The next prime is 55712453. The reversal of 55712447 is 74421755.

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 55712447 - 2⁴ = 55712431 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 (55712467) 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, 3979454 + ... + 3979467.

It is an arithmetic number, because the mean of its divisors is an integer number (15917844).

Almost surely, 2^55712447 is an apocalyptic number.

55712447 is a deficient number, since it is larger than the sum of its proper divisors (7958929).

55712447 is an equidigital number, since it uses as much as digits as its factorization.

55712447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7958928.

The product of its digits is 39200, while the sum is 35.

The square root of 55712447 is about 7464.0771030316. The cubic root of 55712447 is about 381.9302683312.

The spelling of 55712447 in words is "fifty-five million, seven hundred twelve thousand, four hundred forty-seven".