54551111 has 2 divisors, whose sum is σ = 54551112. Its totient is φ = 54551110.

The previous prime is 54551099. The next prime is 54551129. The reversal of 54551111 is 11115545.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 54551111 - 2¹⁰ = 54550087 is a prime.

It is a super-2 number, since 2×54551111² = 5951647422668642, 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 (54551131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27275555 + 27275556.

It is an arithmetic number, because the mean of its divisors is an integer number (27275556).

Almost surely, 2^54551111 is an apocalyptic number.

54551111 is a deficient number, since it is larger than the sum of its proper divisors (1).

54551111 is an equidigital number, since it uses as much as digits as its factorization.

54551111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 500, while the sum is 23.

The square root of 54551111 is about 7385.8723926155. The cubic root of 54551111 is about 379.2578103532.

Adding to 54551111 its reverse (11115545), we get a palindrome (65666656).

The spelling of 54551111 in words is "fifty-four million, five hundred fifty-one thousand, one hundred eleven".