30412521 has 24 divisors (see below), whose sum is σ = 46475520. Its totient is φ = 19110816.

The previous prime is 30412489. The next prime is 30412523. The reversal of 30412521 is 12521403.

It is not a de Polignac number, because 30412521 - 2⁵ = 30412489 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30412494 and 30412503.

It is not an unprimeable number, because it can be changed into a prime (30412523) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49800 + ... + 50406.

It is an arithmetic number, because the mean of its divisors is an integer number (1936480).

Almost surely, 2^30412521 is an apocalyptic number.

It is an amenable number.

30412521 is a deficient number, since it is larger than the sum of its proper divisors (16062999).

30412521 is a wasteful number, since it uses less digits than its factorization.

30412521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 925 (or 922 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 30412521 is about 5514.7548449591. The cubic root of 30412521 is about 312.1409927354.

Adding to 30412521 its reverse (12521403), we get a palindrome (42933924).

The spelling of 30412521 in words is "thirty million, four hundred twelve thousand, five hundred twenty-one".