30505053 has 8 divisors (see below), whose sum is σ = 40984416. Its totient is φ = 20181200.

The previous prime is 30505037. The next prime is 30505081. The reversal of 30505053 is 35050503.

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

It is a cyclic number.

It is not a de Polignac number, because 30505053 - 2⁴ = 30505037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30505003) 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, 38418 + ... + 39203.

It is an arithmetic number, because the mean of its divisors is an integer number (5123052).

Almost surely, 2^30505053 is an apocalyptic number.

It is an amenable number.

30505053 is a deficient number, since it is larger than the sum of its proper divisors (10479363).

30505053 is a wasteful number, since it uses less digits than its factorization.

30505053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77755.

The product of its (nonzero) digits is 1125, while the sum is 21.

The square root of 30505053 is about 5523.1379667722. The cubic root of 30505053 is about 312.4572417231.

Adding to 30505053 its reverse (35050503), we get a palindrome (65555556).

The spelling of 30505053 in words is "thirty million, five hundred five thousand, fifty-three".