30540155 has 8 divisors (see below), whose sum is σ = 36692784. Its totient is φ = 24402400.

The previous prime is 30540151. The next prime is 30540173. The reversal of 30540155 is 55104503.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30540155 - 2² = 30540151 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30540155.

It is not an unprimeable number, because it can be changed into a prime (30540151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1460 + ... + 7950.

It is an arithmetic number, because the mean of its divisors is an integer number (4586598).

Almost surely, 2^30540155 is an apocalyptic number.

30540155 is a deficient number, since it is larger than the sum of its proper divisors (6152629).

30540155 is an equidigital number, since it uses as much as digits as its factorization.

30540155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7437.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 30540155 is about 5526.3147756891. The cubic root of 30540155 is about 312.5770434042.

Adding to 30540155 its reverse (55104503), we get a palindrome (85644658).

The spelling of 30540155 in words is "thirty million, five hundred forty thousand, one hundred fifty-five".