30061145 has 4 divisors (see below), whose sum is σ = 36073380. Its totient is φ = 24048912.

The previous prime is 30061121. The next prime is 30061147. The reversal of 30061145 is 54116003.

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 13053769 + 17007376 = 3613^2 + 4124^2 .

It is a cyclic number.

It is not a de Polignac number, because 30061145 - 2¹⁴ = 30044761 is a prime.

It is a super-2 number, since 2×30061145² = 1807344877422050, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30061147) 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 3 ways as a sum of consecutive naturals, for example, 3006110 + ... + 3006119.

It is an arithmetic number, because the mean of its divisors is an integer number (9018345).

Almost surely, 2^30061145 is an apocalyptic number.

It is an amenable number.

30061145 is a deficient number, since it is larger than the sum of its proper divisors (6012235).

30061145 is an equidigital number, since it uses as much as digits as its factorization.

30061145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6012234.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 30061145 is about 5482.8044831090. The cubic root of 30061145 is about 310.9342092612.

Adding to 30061145 its reverse (54116003), we get a palindrome (84177148).

The spelling of 30061145 in words is "thirty million, sixty-one thousand, one hundred forty-five".