1541381 has 2 divisors, whose sum is σ = 1541382.
Its totient is φ = 1541380.
The previous prime is 1541377. The next prime is 1541389. The reversal of 1541381 is 1831451.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 1221025 + 320356 = 1105^2 + 566^2
It is an emirp because it is prime and its reverse (1831451) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 1541381 - 22 = 1541377 is a prime.
It is a super-2 number, since 2×15413812 = 4751710774322, 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 (1541389) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 770690 + 770691.
It is an arithmetic number, because the mean of its divisors is an integer number (770691).
21541381 is an apocalyptic number.
It is an amenable number.
1541381 is a deficient number, since it is larger than the sum of its proper divisors (1).
1541381 is an equidigital number, since it uses as much as digits as its factorization.
1541381 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 480, while the sum is 23.
The square root of 1541381 is about 1241.5236606686.
The cubic root of 1541381 is about 115.5145437481.
The spelling of 1541381 in words is "one million, five hundred forty-one thousand, three hundred eighty-one".