30040555 has 4 divisors (see below), whose sum is σ = 36048672. Its totient is φ = 24032440.

The previous prime is 30040529. The next prime is 30040561. The reversal of 30040555 is 55504003.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55504003 = 107 ⋅518729.

It is not a de Polignac number, because 30040555 - 2⁵ = 30040523 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3004051 + ... + 3004060.

It is an arithmetic number, because the mean of its divisors is an integer number (9012168).

Almost surely, 2^30040555 is an apocalyptic number.

30040555 is a deficient number, since it is larger than the sum of its proper divisors (6008117).

30040555 is an equidigital number, since it uses as much as digits as its factorization.

30040555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6008116.

The product of its (nonzero) digits is 1500, while the sum is 22.

The square root of 30040555 is about 5480.9264727781. The cubic root of 30040555 is about 310.8632028995.

Adding to 30040555 its reverse (55504003), we get a palindrome (85544558).

The spelling of 30040555 in words is "thirty million, forty thousand, five hundred fifty-five".