45401281 has 2 divisors, whose sum is σ = 45401282. Its totient is φ = 45401280.

The previous prime is 45401233. The next prime is 45401341. The reversal of 45401281 is 18210454.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43441281 + 1960000 = 6591^2 + 1400^2 .

It is a cyclic number.

It is not a de Polignac number, because 45401281 - 2²³ = 37012673 is a prime.

It is a super-2 number, since 2×45401281² = 4122552632881922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (45401981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22700640 + 22700641.

It is an arithmetic number, because the mean of its divisors is an integer number (22700641).

Almost surely, 2^45401281 is an apocalyptic number.

It is an amenable number.

45401281 is a deficient number, since it is larger than the sum of its proper divisors (1).

45401281 is an equidigital number, since it uses as much as digits as its factorization.

45401281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 45401281 is about 6738.0472690535. The cubic root of 45401281 is about 356.7434726527.

The spelling of 45401281 in words is "forty-five million, four hundred one thousand, two hundred eighty-one".