55664533 has 2 divisors, whose sum is σ = 55664534. Its totient is φ = 55664532.

The previous prime is 55664527. The next prime is 55664537. The reversal of 55664533 is 33546655.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31438449 + 24226084 = 5607^2 + 4922^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55664533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55664492 and 55664501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55664537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27832266 + 27832267.

It is an arithmetic number, because the mean of its divisors is an integer number (27832267).

Almost surely, 2^55664533 is an apocalyptic number.

It is an amenable number.

55664533 is a deficient number, since it is larger than the sum of its proper divisors (1).

55664533 is an equidigital number, since it uses as much as digits as its factorization.

55664533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 162000, while the sum is 37.

The square root of 55664533 is about 7460.8667727014. The cubic root of 55664533 is about 381.8207472909.

The spelling of 55664533 in words is "fifty-five million, six hundred sixty-four thousand, five hundred thirty-three".