55443519 has 6 divisors (see below), whose sum is σ = 80085096. Its totient is φ = 36962340.

The previous prime is 55443517. The next prime is 55443527. The reversal of 55443519 is 91534455.

It is not a de Polignac number, because 55443519 - 2¹ = 55443517 is a prime.

It is a super-2 number, since 2×55443519² = 6147967598206722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55443517) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3080187 + ... + 3080204.

It is an arithmetic number, because the mean of its divisors is an integer number (13347516).

Almost surely, 2^55443519 is an apocalyptic number.

55443519 is a deficient number, since it is larger than the sum of its proper divisors (24641577).

55443519 is a wasteful number, since it uses less digits than its factorization.

55443519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6160397 (or 6160394 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

The square root of 55443519 is about 7446.0404914290. The cubic root of 55443519 is about 381.3147418853.

The spelling of 55443519 in words is "fifty-five million, four hundred forty-three thousand, five hundred nineteen".