55007723 has 2 divisors, whose sum is σ = 55007724. Its totient is φ = 55007722.

The previous prime is 55007657. The next prime is 55007749. The reversal of 55007723 is 32770055.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55007723 is a prime.

It is not a weakly prime, because it can be changed into another prime (55007023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27503861 + 27503862.

It is an arithmetic number, because the mean of its divisors is an integer number (27503862).

Almost surely, 2^55007723 is an apocalyptic number.

55007723 is a deficient number, since it is larger than the sum of its proper divisors (1).

55007723 is an equidigital number, since it uses as much as digits as its factorization.

55007723 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7350, while the sum is 29.

The square root of 55007723 is about 7416.7191533723. The cubic root of 55007723 is about 380.3130453654.

Adding to 55007723 its reverse (32770055), we get a palindrome (87777778).

The spelling of 55007723 in words is "fifty-five million, seven thousand, seven hundred twenty-three".