30561045 has 32 divisors (see below), whose sum is σ = 50761728. Its totient is φ = 15690048.

The previous prime is 30561023. The next prime is 30561049. The reversal of 30561045 is 54016503.

It is not a de Polignac number, because 30561045 - 2⁹ = 30560533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30561049) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46912 + ... + 47558.

It is an arithmetic number, because the mean of its divisors is an integer number (1586304).

Almost surely, 2^30561045 is an apocalyptic number.

It is an amenable number.

30561045 is a deficient number, since it is larger than the sum of its proper divisors (20200683).

30561045 is a wasteful number, since it uses less digits than its factorization.

30561045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 30561045 is about 5528.2045005589. The cubic root of 30561045 is about 312.6482965482.

Adding to 30561045 its reverse (54016503), we get a palindrome (84577548).

The spelling of 30561045 in words is "thirty million, five hundred sixty-one thousand, forty-five".