55412447 has 4 divisors (see below), whose sum is σ = 56192976. Its totient is φ = 54631920.

The previous prime is 55412431. The next prime is 55412459. The reversal of 55412447 is 74421455.

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 55412447 - 2⁴ = 55412431 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 (55412477) 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, 390158 + ... + 390299.

It is an arithmetic number, because the mean of its divisors is an integer number (14048244).

Almost surely, 2^55412447 is an apocalyptic number.

55412447 is a deficient number, since it is larger than the sum of its proper divisors (780529).

55412447 is an equidigital number, since it uses as much as digits as its factorization.

55412447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780528.

The product of its digits is 22400, while the sum is 32.

The square root of 55412447 is about 7443.9537209738. The cubic root of 55412447 is about 381.2434956518.

The spelling of 55412447 in words is "fifty-five million, four hundred twelve thousand, four hundred forty-seven".