55927439 has 2 divisors, whose sum is σ = 55927440. Its totient is φ = 55927438.

The previous prime is 55927409. The next prime is 55927447. The reversal of 55927439 is 93472955.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55927439 - 2¹⁶ = 55861903 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55927439.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55927409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27963719 + 27963720.

It is an arithmetic number, because the mean of its divisors is an integer number (27963720).

Almost surely, 2^55927439 is an apocalyptic number.

55927439 is a deficient number, since it is larger than the sum of its proper divisors (1).

55927439 is an equidigital number, since it uses as much as digits as its factorization.

55927439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 340200, while the sum is 44.

The square root of 55927439 is about 7478.4650162985. The cubic root of 55927439 is about 382.4209220381.

It can be divided in two parts, 5592 and 7439, that added together give a palindrome (13031).

The spelling of 55927439 in words is "fifty-five million, nine hundred twenty-seven thousand, four hundred thirty-nine".