55443923 has 2 divisors, whose sum is σ = 55443924. Its totient is φ = 55443922.

The previous prime is 55443901. The next prime is 55443959. The reversal of 55443923 is 32934455.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55443923 - 2¹² = 55439827 is a prime.

It is not a weakly prime, because it can be changed into another prime (55443023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27721961 + 27721962.

It is an arithmetic number, because the mean of its divisors is an integer number (27721962).

Almost surely, 2^55443923 is an apocalyptic number.

55443923 is a deficient number, since it is larger than the sum of its proper divisors (1).

55443923 is an equidigital number, since it uses as much as digits as its factorization.

55443923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64800, while the sum is 35.

The square root of 55443923 is about 7446.0676198917. The cubic root of 55443923 is about 381.3156680578.

It can be divided in two parts, 554 and 43923, that multiplied together give a palindrome (24333342).

The spelling of 55443923 in words is "fifty-five million, four hundred forty-three thousand, nine hundred twenty-three".