30002155 has 4 divisors (see below), whose sum is σ = 36002592. Its totient is φ = 24001720.

The previous prime is 30002123. The next prime is 30002207. The reversal of 30002155 is 55120003.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 30002155 - 2⁵ = 30002123 is a prime.

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, 3000211 + ... + 3000220.

It is an arithmetic number, because the mean of its divisors is an integer number (9000648).

Almost surely, 2^30002155 is an apocalyptic number.

30002155 is a deficient number, since it is larger than the sum of its proper divisors (6000437).

30002155 is an equidigital number, since it uses as much as digits as its factorization.

30002155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6000436.

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 30002155 is about 5477.4222952042. The cubic root of 30002155 is about 310.7306905129.

Adding to 30002155 its reverse (55120003), we get a palindrome (85122158).

The spelling of 30002155 in words is "thirty million, two thousand, one hundred fifty-five".