45004381 has 2 divisors, whose sum is σ = 45004382. Its totient is φ = 45004380.

The previous prime is 45004373. The next prime is 45004391. The reversal of 45004381 is 18340054.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40208281 + 4796100 = 6341^2 + 2190^2 .

It is a cyclic number.

It is not a de Polignac number, because 45004381 - 2³ = 45004373 is a prime.

It is a super-2 number, since 2×45004381² = 4050788618386322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45004391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22502190 + 22502191.

It is an arithmetic number, because the mean of its divisors is an integer number (22502191).

Almost surely, 2^45004381 is an apocalyptic number.

It is an amenable number.

45004381 is a deficient number, since it is larger than the sum of its proper divisors (1).

45004381 is an equidigital number, since it uses as much as digits as its factorization.

45004381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 45004381 is about 6708.5304650124. The cubic root of 45004381 is about 355.7008728519.

The spelling of 45004381 in words is "forty-five million, four thousand, three hundred eighty-one".