55443959 has 2 divisors, whose sum is σ = 55443960. Its totient is φ = 55443958.

The previous prime is 55443923. The next prime is 55443967. The reversal of 55443959 is 95934455.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55443959 - 2¹² = 55439863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55443979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27721979 + 27721980.

It is an arithmetic number, because the mean of its divisors is an integer number (27721980).

Almost surely, 2^55443959 is an apocalyptic number.

55443959 is a deficient number, since it is larger than the sum of its proper divisors (1).

55443959 is an equidigital number, since it uses as much as digits as its factorization.

55443959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 486000, while the sum is 44.

The square root of 55443959 is about 7446.0700372747. The cubic root of 55443959 is about 381.3157505878.

The spelling of 55443959 in words is "fifty-five million, four hundred forty-three thousand, nine hundred fifty-nine".