45742381 has 2 divisors, whose sum is σ = 45742382. Its totient is φ = 45742380.

The previous prime is 45742373. The next prime is 45742409. The reversal of 45742381 is 18324754.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35212356 + 10530025 = 5934^2 + 3245^2 .

It is a cyclic number.

It is not a de Polignac number, because 45742381 - 2³ = 45742373 is a prime.

It is a super-2 number, since 2×45742381² = 4184730839098322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45742321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22871190 + 22871191.

It is an arithmetic number, because the mean of its divisors is an integer number (22871191).

Almost surely, 2^45742381 is an apocalyptic number.

It is an amenable number.

45742381 is a deficient number, since it is larger than the sum of its proper divisors (1).

45742381 is an equidigital number, since it uses as much as digits as its factorization.

45742381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26880, while the sum is 34.

The square root of 45742381 is about 6763.3113930973. The cubic root of 45742381 is about 357.6346495903.

The spelling of 45742381 in words is "forty-five million, seven hundred forty-two thousand, three hundred eighty-one".