30040541 has 4 divisors (see below), whose sum is σ = 30256800. Its totient is φ = 29824284.

The previous prime is 30040529. The next prime is 30040561. The reversal of 30040541 is 14504003.

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 an emirpimes, since its reverse is a distinct semiprime: 14504003 = 151 ⋅96053.

It is a cyclic number.

It is not a de Polignac number, because 30040541 - 2⁶ = 30040477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30040511) 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, 107921 + ... + 108198.

It is an arithmetic number, because the mean of its divisors is an integer number (7564200).

Almost surely, 2^30040541 is an apocalyptic number.

It is an amenable number.

30040541 is a deficient number, since it is larger than the sum of its proper divisors (216259).

30040541 is a wasteful number, since it uses less digits than its factorization.

30040541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216258.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 30040541 is about 5480.9251956216. The cubic root of 30040541 is about 310.8631546082.

Adding to 30040541 its reverse (14504003), we get a palindrome (44544544).

The spelling of 30040541 in words is "thirty million, forty thousand, five hundred forty-one".