30485551 has 2 divisors, whose sum is σ = 30485552. Its totient is φ = 30485550.

The previous prime is 30485513. The next prime is 30485561. The reversal of 30485551 is 15558403.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30485551 - 2¹¹ = 30483503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30485561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15242775 + 15242776.

It is an arithmetic number, because the mean of its divisors is an integer number (15242776).

Almost surely, 2^30485551 is an apocalyptic number.

30485551 is a deficient number, since it is larger than the sum of its proper divisors (1).

30485551 is an equidigital number, since it uses as much as digits as its factorization.

30485551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12000, while the sum is 31.

The square root of 30485551 is about 5521.3722026322. The cubic root of 30485551 is about 312.3906424821.

The spelling of 30485551 in words is "thirty million, four hundred eighty-five thousand, five hundred fifty-one".