54881081 has 2 divisors, whose sum is σ = 54881082. Its totient is φ = 54881080.

The previous prime is 54881051. The next prime is 54881089. The reversal of 54881081 is 18018845.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53523856 + 1357225 = 7316^2 + 1165^2 .

It is a cyclic number.

It is not a de Polignac number, because 54881081 - 2⁶ = 54881017 is a prime.

It is a super-2 number, since 2×54881081² = 6023866103457122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (54881089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27440540 + 27440541.

It is an arithmetic number, because the mean of its divisors is an integer number (27440541).

Almost surely, 2^54881081 is an apocalyptic number.

It is an amenable number.

54881081 is a deficient number, since it is larger than the sum of its proper divisors (1).

54881081 is an equidigital number, since it uses as much as digits as its factorization.

54881081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10240, while the sum is 35.

The square root of 54881081 is about 7408.1766312636. The cubic root of 54881081 is about 380.0209614476.

The spelling of 54881081 in words is "fifty-four million, eight hundred eighty-one thousand, eighty-one".