55527331 has 2 divisors, whose sum is σ = 55527332. Its totient is φ = 55527330.

The previous prime is 55527299. The next prime is 55527341. The reversal of 55527331 is 13372555.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55527331 - 2⁵ = 55527299 is a prime.

It is a super-2 number, since 2×55527331² = 6166568975967122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55527293 and 55527302.

It is not a weakly prime, because it can be changed into another prime (55527341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27763665 + 27763666.

It is an arithmetic number, because the mean of its divisors is an integer number (27763666).

Almost surely, 2^55527331 is an apocalyptic number.

55527331 is a deficient number, since it is larger than the sum of its proper divisors (1).

55527331 is an equidigital number, since it uses as much as digits as its factorization.

55527331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15750, while the sum is 31.

The square root of 55527331 is about 7451.6663237158. Note that the first 3 decimals coincide. The cubic root of 55527331 is about 381.5067851370.

Adding to 55527331 its reverse (13372555), we get a palindrome (68899886).

The spelling of 55527331 in words is "fifty-five million, five hundred twenty-seven thousand, three hundred thirty-one".