54181481 has 6 divisors (see below), whose sum is σ = 55088046. Its totient is φ = 53289600.

The previous prime is 54181471. The next prime is 54181507. The reversal of 54181481 is 18418145.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 11881 + 54169600 = 109^2 + 7360^2 .

It is not a de Polignac number, because 54181481 - 2⁶ = 54181417 is a prime.

It is a super-2 number, since 2×54181481² = 5871265766706722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54181471) 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, 3560 + ... + 11001.

It is an arithmetic number, because the mean of its divisors is an integer number (9181341).

Almost surely, 2^54181481 is an apocalyptic number.

It is an amenable number.

54181481 is a deficient number, since it is larger than the sum of its proper divisors (906565).

54181481 is an equidigital number, since it uses as much as digits as its factorization.

54181481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14683 (or 14622 counting only the distinct ones).

The product of its digits is 5120, while the sum is 32.

The square root of 54181481 is about 7360.8070889000. The cubic root of 54181481 is about 378.3992706378.

The spelling of 54181481 in words is "fifty-four million, one hundred eighty-one thousand, four hundred eighty-one".