30015255 has 16 divisors (see below), whose sum is σ = 48092544. Its totient is φ = 15985440.

The previous prime is 30015241. The next prime is 30015277. The reversal of 30015255 is 55251003.

It is a de Polignac number, because none of the positive numbers 2^k-30015255 is a prime.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 18840 + ... + 20370.

It is an arithmetic number, because the mean of its divisors is an integer number (3005784).

Almost surely, 2^30015255 is an apocalyptic number.

30015255 is a deficient number, since it is larger than the sum of its proper divisors (18077289).

30015255 is a wasteful number, since it uses less digits than its factorization.

30015255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2846.

The product of its (nonzero) digits is 750, while the sum is 21.

The square root of 30015255 is about 5478.6179826668. The cubic root of 30015255 is about 310.7759092617.

Adding to 30015255 its reverse (55251003), we get a palindrome (85266258).

It can be divided in two parts, 3001 and 5255, that added together give a triangular number (8256 = T₁₂₈).

The spelling of 30015255 in words is "thirty million, fifteen thousand, two hundred fifty-five".