55042723 has 2 divisors, whose sum is σ = 55042724. Its totient is φ = 55042722.

The previous prime is 55042721. The next prime is 55042739. The reversal of 55042723 is 32724055.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55042723 - 2¹ = 55042721 is a prime.

Together with 55042721, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 55042691 and 55042700.

It is not a weakly prime, because it can be changed into another prime (55042721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27521361 + 27521362.

It is an arithmetic number, because the mean of its divisors is an integer number (27521362).

Almost surely, 2^55042723 is an apocalyptic number.

55042723 is a deficient number, since it is larger than the sum of its proper divisors (1).

55042723 is an equidigital number, since it uses as much as digits as its factorization.

55042723 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8400, while the sum is 28.

The square root of 55042723 is about 7419.0783120277. The cubic root of 55042723 is about 380.3936894018.

Adding to 55042723 its reverse (32724055), we get a palindrome (87766778).

The spelling of 55042723 in words is "fifty-five million, forty-two thousand, seven hundred twenty-three".