54553181 has 2 divisors, whose sum is σ = 54553182. Its totient is φ = 54553180.

The previous prime is 54553157. The next prime is 54553189. The reversal of 54553181 is 18135545.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53787556 + 765625 = 7334^2 + 875^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54553181 is a prime.

It is a super-2 number, since 2×54553181² = 5952099114437522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54553189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27276590 + 27276591.

It is an arithmetic number, because the mean of its divisors is an integer number (27276591).

Almost surely, 2^54553181 is an apocalyptic number.

It is an amenable number.

54553181 is a deficient number, since it is larger than the sum of its proper divisors (1).

54553181 is an equidigital number, since it uses as much as digits as its factorization.

54553181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12000, while the sum is 32.

The square root of 54553181 is about 7386.0125236829. The cubic root of 54553181 is about 379.2626074063.

The spelling of 54553181 in words is "fifty-four million, five hundred fifty-three thousand, one hundred eighty-one".