30155451 has 8 divisors (see below), whose sum is σ = 42323520. Its totient is φ = 19045512.

The previous prime is 30155449. The next prime is 30155473. The reversal of 30155451 is 15455103.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30155451 - 2¹ = 30155449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30155401) 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 in 7 ways as a sum of consecutive naturals, for example, 264465 + ... + 264578.

It is an arithmetic number, because the mean of its divisors is an integer number (5290440).

Almost surely, 2^30155451 is an apocalyptic number.

30155451 is a deficient number, since it is larger than the sum of its proper divisors (12168069).

30155451 is a wasteful number, since it uses less digits than its factorization.

30155451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529065.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 30155451 is about 5491.3979094580. The cubic root of 30155451 is about 311.2590178191.

The spelling of 30155451 in words is "thirty million, one hundred fifty-five thousand, four hundred fifty-one".