30660551 has 2 divisors, whose sum is σ = 30660552. Its totient is φ = 30660550.

The previous prime is 30660499. The next prime is 30660563. The reversal of 30660551 is 15506603.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30660551 - 2¹⁴ = 30644167 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30660551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30660151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15330275 + 15330276.

It is an arithmetic number, because the mean of its divisors is an integer number (15330276).

Almost surely, 2^30660551 is an apocalyptic number.

30660551 is a deficient number, since it is larger than the sum of its proper divisors (1).

30660551 is an equidigital number, since it uses as much as digits as its factorization.

30660551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 30660551 is about 5537.1970346015. The cubic root of 30660551 is about 312.9872539526.

The spelling of 30660551 in words is "thirty million, six hundred sixty thousand, five hundred fifty-one".