55443961 has 12 divisors (see below), whose sum is σ = 58405648. Its totient is φ = 52626024.

The previous prime is 55443959. The next prime is 55443967. The reversal of 55443961 is 16934455.

55443961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55443961 - 2¹ = 55443959 is a prime.

It is a super-2 number, since 2×55443961² = 6148065622739042, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55443961.

It is not an unprimeable number, because it can be changed into a prime (55443967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85906 + ... + 86548.

Almost surely, 2^55443961 is an apocalyptic number.

It is an amenable number.

55443961 is a deficient number, since it is larger than the sum of its proper divisors (2961687).

55443961 is a wasteful number, since it uses less digits than its factorization.

55443961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 852 (or 829 counting only the distinct ones).

The product of its digits is 64800, while the sum is 37.

The square root of 55443961 is about 7446.0701715737. The cubic root of 55443961 is about 381.3157551728.

The spelling of 55443961 in words is "fifty-five million, four hundred forty-three thousand, nine hundred sixty-one".