30155253 has 4 divisors (see below), whose sum is σ = 40207008. Its totient is φ = 20103500.

The previous prime is 30155249. The next prime is 30155269. The reversal of 30155253 is 35255103.

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.

It is a cyclic number.

It is not a de Polignac number, because 30155253 - 2² = 30155249 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30155053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5025873 + ... + 5025878.

It is an arithmetic number, because the mean of its divisors is an integer number (10051752).

Almost surely, 2^30155253 is an apocalyptic number.

It is an amenable number.

30155253 is a deficient number, since it is larger than the sum of its proper divisors (10051755).

30155253 is a wasteful number, since it uses less digits than its factorization.

30155253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10051754.

The product of its (nonzero) digits is 2250, while the sum is 24.

The square root of 30155253 is about 5491.3798812320. The cubic root of 30155253 is about 311.2583365777.

The spelling of 30155253 in words is "thirty million, one hundred fifty-five thousand, two hundred fifty-three".