54661331 has 2 divisors, whose sum is σ = 54661332. Its totient is φ = 54661330.

The previous prime is 54661283. The next prime is 54661349. The reversal of 54661331 is 13316645.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54661331 is a prime.

It is a super-2 number, since 2×54661331² = 5975722213383122, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 54661294 and 54661303.

It is not a weakly prime, because it can be changed into another prime (54661351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27330665 + 27330666.

It is an arithmetic number, because the mean of its divisors is an integer number (27330666).

Almost surely, 2^54661331 is an apocalyptic number.

54661331 is a deficient number, since it is larger than the sum of its proper divisors (1).

54661331 is an equidigital number, since it uses as much as digits as its factorization.

54661331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 29.

The square root of 54661331 is about 7393.3301698220. The cubic root of 54661331 is about 379.5130674462.

Adding to 54661331 its reverse (13316645), we get a palindrome (67977976).

The spelling of 54661331 in words is "fifty-four million, six hundred sixty-one thousand, three hundred thirty-one".