55041945 has 24 divisors (see below), whose sum is σ = 102446784. Its totient is φ = 25161696.

The previous prime is 55041929. The next prime is 55041949. The reversal of 55041945 is 54914055.

It is not a de Polignac number, because 55041945 - 2⁴ = 55041929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55041949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36709 + ... + 38178.

It is an arithmetic number, because the mean of its divisors is an integer number (4268616).

Almost surely, 2^55041945 is an apocalyptic number.

It is an amenable number.

55041945 is a deficient number, since it is larger than the sum of its proper divisors (47404839).

55041945 is a wasteful number, since it uses less digits than its factorization.

55041945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74909 (or 74902 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 33.

The square root of 55041945 is about 7419.0258794534. The cubic root of 55041945 is about 380.3918971716.

The spelling of 55041945 in words is "fifty-five million, forty-one thousand, nine hundred forty-five".