5481945 has 32 divisors (see below), whose sum is σ = 11139840. Its totient is φ = 2505600.

The previous prime is 5481913. The next prime is 5481961. The reversal of 5481945 is 5491845.

It is not a de Polignac number, because 5481945 - 2⁵ = 5481913 is a prime.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1956 + ... + 3845.

It is an arithmetic number, because the mean of its divisors is an integer number (348120).

Almost surely, 2^5481945 is an apocalyptic number.

It is an amenable number.

5481945 is an abundant number, since it is smaller than the sum of its proper divisors (5657895).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5481945 is a wasteful number, since it uses less digits than its factorization.

5481945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5822 (or 5816 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 5481945 is about 2341.3553766996. The cubic root of 5481945 is about 176.3240521779.

The spelling of 5481945 in words is "five million, four hundred eighty-one thousand, nine hundred forty-five".