55550923 has 2 divisors, whose sum is σ = 55550924. Its totient is φ = 55550922.

The previous prime is 55550903. The next prime is 55550939. The reversal of 55550923 is 32905555.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55550923 is a prime.

It is not a weakly prime, because it can be changed into another prime (55550903) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27775461 + 27775462.

It is an arithmetic number, because the mean of its divisors is an integer number (27775462).

Almost surely, 2^55550923 is an apocalyptic number.

55550923 is a deficient number, since it is larger than the sum of its proper divisors (1).

55550923 is an equidigital number, since it uses as much as digits as its factorization.

55550923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 33750, while the sum is 34.

The square root of 55550923 is about 7453.2491572468. The cubic root of 55550923 is about 381.5608079850.

The spelling of 55550923 in words is "fifty-five million, five hundred fifty thousand, nine hundred twenty-three".