30252251 has 2 divisors, whose sum is σ = 30252252. Its totient is φ = 30252250.

The previous prime is 30252239. The next prime is 30252269. The reversal of 30252251 is 15225203.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30252251 - 2²² = 26057947 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30252281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15126125 + 15126126.

It is an arithmetic number, because the mean of its divisors is an integer number (15126126).

Almost surely, 2^30252251 is an apocalyptic number.

30252251 is a deficient number, since it is larger than the sum of its proper divisors (1).

30252251 is an equidigital number, since it uses as much as digits as its factorization.

30252251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 30252251 is about 5500.2046325569. The cubic root of 30252251 is about 311.5917126830.

Adding to 30252251 its reverse (15225203), we get a palindrome (45477454).

It can be divided in two parts, 30252 and 251, that added together give a palindrome (30503).

The spelling of 30252251 in words is "thirty million, two hundred fifty-two thousand, two hundred fifty-one".