55537723 has 2 divisors, whose sum is σ = 55537724. Its totient is φ = 55537722.

The previous prime is 55537721. The next prime is 55537747. The reversal of 55537723 is 32773555.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55537723 - 2¹ = 55537721 is a prime.

Together with 55537721, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (55537721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27768861 + 27768862.

It is an arithmetic number, because the mean of its divisors is an integer number (27768862).

Almost surely, 2^55537723 is an apocalyptic number.

55537723 is a deficient number, since it is larger than the sum of its proper divisors (1).

55537723 is an equidigital number, since it uses as much as digits as its factorization.

55537723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 110250, while the sum is 37.

The square root of 55537723 is about 7452.3635847964. The cubic root of 55537723 is about 381.5305834548.

The spelling of 55537723 in words is "fifty-five million, five hundred thirty-seven thousand, seven hundred twenty-three".