55712539 has 2 divisors, whose sum is σ = 55712540. Its totient is φ = 55712538.

The previous prime is 55712513. The next prime is 55712543. The reversal of 55712539 is 93521755.

It is a happy number.

55712539 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55712539 - 2¹⁷ = 55581467 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55712498 and 55712507.

It is not a weakly prime, because it can be changed into another prime (55716539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27856269 + 27856270.

It is an arithmetic number, because the mean of its divisors is an integer number (27856270).

Almost surely, 2^55712539 is an apocalyptic number.

55712539 is a deficient number, since it is larger than the sum of its proper divisors (1).

55712539 is an equidigital number, since it uses as much as digits as its factorization.

55712539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47250, while the sum is 37.

The square root of 55712539 is about 7464.0832658807. The cubic root of 55712539 is about 381.9304785629.

The spelling of 55712539 in words is "fifty-five million, seven hundred twelve thousand, five hundred thirty-nine".