45308381 has 2 divisors, whose sum is σ = 45308382. Its totient is φ = 45308380.

The previous prime is 45308371. The next prime is 45308429. The reversal of 45308381 is 18380354.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45091225 + 217156 = 6715^2 + 466^2 .

It is a cyclic number.

It is not a de Polignac number, because 45308381 - 2¹⁰ = 45307357 is a prime.

It is a super-2 number, since 2×45308381² = 4105698777682322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45308371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22654190 + 22654191.

It is an arithmetic number, because the mean of its divisors is an integer number (22654191).

Almost surely, 2^45308381 is an apocalyptic number.

It is an amenable number.

45308381 is a deficient number, since it is larger than the sum of its proper divisors (1).

45308381 is an equidigital number, since it uses as much as digits as its factorization.

45308381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 45308381 is about 6731.1500503257. The cubic root of 45308381 is about 356.4999839356.

The spelling of 45308381 in words is "forty-five million, three hundred eight thousand, three hundred eighty-one".