302504981 has 2 divisors, whose sum is σ = 302504982. Its totient is φ = 302504980.

The previous prime is 302504971. The next prime is 302505013. The reversal of 302504981 is 189405203.

It is an a-pointer prime, because the next prime (302505013) can be obtained adding 302504981 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 157904356 + 144600625 = 12566^2 + 12025^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-302504981 is a prime.

It is a super-2 number, since 2×302504981² = 183018527059620722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (302504911) 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 as a sum of consecutive naturals, namely, 151252490 + 151252491.

It is an arithmetic number, because the mean of its divisors is an integer number (151252491).

Almost surely, 2^302504981 is an apocalyptic number.

It is an amenable number.

302504981 is a deficient number, since it is larger than the sum of its proper divisors (1).

302504981 is an equidigital number, since it uses as much as digits as its factorization.

302504981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 302504981 is about 17392.6703240187. The cubic root of 302504981 is about 671.2910289368.

The spelling of 302504981 in words is "three hundred two million, five hundred four thousand, nine hundred eighty-one".