30451125 has 16 divisors (see below), whose sum is σ = 50671296. Its totient is φ = 16240400.

The previous prime is 30451121. The next prime is 30451133. The reversal of 30451125 is 52115403.

It is not a de Polignac number, because 30451125 - 2² = 30451121 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30451121) 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 15 ways as a sum of consecutive naturals, for example, 40227 + ... + 40976.

It is an arithmetic number, because the mean of its divisors is an integer number (3166956).

Almost surely, 2^30451125 is an apocalyptic number.

It is an amenable number.

30451125 is a deficient number, since it is larger than the sum of its proper divisors (20220171).

30451125 is an equidigital number, since it uses as much as digits as its factorization.

30451125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81221 (or 81211 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 30451125 is about 5518.2537998900. The cubic root of 30451125 is about 312.2730084928.

Adding to 30451125 its reverse (52115403), we get a palindrome (82566528).

The spelling of 30451125 in words is "thirty million, four hundred fifty-one thousand, one hundred twenty-five".