55115527 has 2 divisors, whose sum is σ = 55115528. Its totient is φ = 55115526.

The previous prime is 55115507. The next prime is 55115531. The reversal of 55115527 is 72551155.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55115527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55115507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27557763 + 27557764.

It is an arithmetic number, because the mean of its divisors is an integer number (27557764).

Almost surely, 2^55115527 is an apocalyptic number.

55115527 is a deficient number, since it is larger than the sum of its proper divisors (1).

55115527 is an equidigital number, since it uses as much as digits as its factorization.

55115527 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8750, while the sum is 31.

The square root of 55115527 is about 7423.9832300457. The cubic root of 55115527 is about 380.5613287640.

The spelling of 55115527 in words is "fifty-five million, one hundred fifteen thousand, five hundred twenty-seven".