30545029 has 4 divisors (see below), whose sum is σ = 30556876. Its totient is φ = 30533184.

The previous prime is 30545023. The next prime is 30545051. The reversal of 30545029 is 92054503.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 14424804 + 16120225 = 3798^2 + 4015^2 .

It is a cyclic number.

It is not a de Polignac number, because 30545029 - 2⁷ = 30544901 is a prime.

It is a super-2 number, since 2×30545029² = 1865997593221682, 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 = 30544988 and 30545006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30545023) 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, 234 + ... + 7819.

It is an arithmetic number, because the mean of its divisors is an integer number (7639219).

Almost surely, 2^30545029 is an apocalyptic number.

It is an amenable number.

30545029 is a deficient number, since it is larger than the sum of its proper divisors (11847).

30545029 is an equidigital number, since it uses as much as digits as its factorization.

30545029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11846.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 30545029 is about 5526.7557391294. The cubic root of 30545029 is about 312.5936709063.

The spelling of 30545029 in words is "thirty million, five hundred forty-five thousand, twenty-nine".