55664527 has 2 divisors, whose sum is σ = 55664528. Its totient is φ = 55664526.

The previous prime is 55664473. The next prime is 55664533. The reversal of 55664527 is 72546655.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55664527 - 2¹⁵ = 55631759 is a prime.

It is a super-4 number, since 4×55664527⁴ (a number of 32 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55664527.

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, 27832263 + 27832264.

It is an arithmetic number, because the mean of its divisors is an integer number (27832264).

Almost surely, 2^55664527 is an apocalyptic number.

55664527 is a deficient number, since it is larger than the sum of its proper divisors (1).

55664527 is an equidigital number, since it uses as much as digits as its factorization.

55664527 is an evil number, because the sum of its binary digits is even.

The product of its digits is 252000, while the sum is 40.

The square root of 55664527 is about 7460.8663706033. The cubic root of 55664527 is about 381.8207335722.

The spelling of 55664527 in words is "fifty-five million, six hundred sixty-four thousand, five hundred twenty-seven".