30535121 has 4 divisors (see below), whose sum is σ = 30560100. Its totient is φ = 30510144.

The previous prime is 30535091. The next prime is 30535123. The reversal of 30535121 is 12153503.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10857025 + 19678096 = 3295^2 + 4436^2 .

It is a cyclic number.

It is not a de Polignac number, because 30535121 - 2¹⁴ = 30518737 is a prime.

It is a super-2 number, since 2×30535121² = 1864787228969282, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30535093 and 30535102.

It is not an unprimeable number, because it can be changed into a prime (30535123) 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, 10556 + ... + 13133.

It is an arithmetic number, because the mean of its divisors is an integer number (7640025).

Almost surely, 2^30535121 is an apocalyptic number.

It is an amenable number.

30535121 is a deficient number, since it is larger than the sum of its proper divisors (24979).

30535121 is a wasteful number, since it uses less digits than its factorization.

30535121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24978.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 30535121 is about 5525.8592996927. The cubic root of 30535121 is about 312.5598682098.

Adding to 30535121 its reverse (12153503), we get a palindrome (42688624).

The spelling of 30535121 in words is "thirty million, five hundred thirty-five thousand, one hundred twenty-one".