30520001 has 4 divisors (see below), whose sum is σ = 30532272. Its totient is φ = 30507732.

The previous prime is 30519959. The next prime is 30520019. The reversal of 30520001 is 10002503.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 10002503 = 7 ⋅1428929.

It is a cyclic number.

It is not a de Polignac number, because 30520001 - 2¹⁰ = 30518977 is a prime.

It is a super-2 number, since 2×30520001² = 1862940922080002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30520601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 935 + ... + 7868.

It is an arithmetic number, because the mean of its divisors is an integer number (7633068).

Almost surely, 2^30520001 is an apocalyptic number.

It is an amenable number.

30520001 is a deficient number, since it is larger than the sum of its proper divisors (12271).

30520001 is an equidigital number, since it uses as much as digits as its factorization.

30520001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12270.

The product of its (nonzero) digits is 30, while the sum is 11.

The square root of 30520001 is about 5524.4910172793. The cubic root of 30520001 is about 312.5082698611.

Adding to 30520001 its reverse (10002503), we get a palindrome (40522504).

The spelling of 30520001 in words is "thirty million, five hundred twenty thousand, one".