45380281 has 2 divisors, whose sum is σ = 45380282. Its totient is φ = 45380280.

The previous prime is 45380261. The next prime is 45380287. The reversal of 45380281 is 18208354.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45104656 + 275625 = 6716^2 + 525^2 .

It is a cyclic number.

It is not a de Polignac number, because 45380281 - 2¹⁷ = 45249209 is a prime.

It is a super-2 number, since 2×45380281² = 4118739807277922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (45380287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22690140 + 22690141.

It is an arithmetic number, because the mean of its divisors is an integer number (22690141).

Almost surely, 2^45380281 is an apocalyptic number.

It is an amenable number.

45380281 is a deficient number, since it is larger than the sum of its proper divisors (1).

45380281 is an equidigital number, since it uses as much as digits as its factorization.

45380281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 45380281 is about 6736.4887738346. The cubic root of 45380281 is about 356.6884612219.

The spelling of 45380281 in words is "forty-five million, three hundred eighty thousand, two hundred eighty-one".