55066507 has 2 divisors, whose sum is σ = 55066508. Its totient is φ = 55066506.

The previous prime is 55066499. The next prime is 55066537. The reversal of 55066507 is 70566055.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55066507 - 2³ = 55066499 is a prime.

It is not a weakly prime, because it can be changed into another prime (55066537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27533253 + 27533254.

It is an arithmetic number, because the mean of its divisors is an integer number (27533254).

Almost surely, 2^55066507 is an apocalyptic number.

55066507 is a deficient number, since it is larger than the sum of its proper divisors (1).

55066507 is an equidigital number, since it uses as much as digits as its factorization.

55066507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31500, while the sum is 34.

The square root of 55066507 is about 7420.6810334362. The cubic root of 55066507 is about 380.4484709740.

The spelling of 55066507 in words is "fifty-five million, sixty-six thousand, five hundred seven".