1315801 has 2 divisors, whose sum is σ = 1315802. Its totient is φ = 1315800.

The previous prime is 1315781. The next prime is 1315823. The reversal of 1315801 is 1085131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1265625 + 50176 = 1125^2 + 224^2 .

It is an emirp because it is prime and its reverse (1085131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1315801 - 2⁷ = 1315673 is a prime.

It is a Chen prime.

1315801 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1315861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 657900 + 657901.

It is an arithmetic number, because the mean of its divisors is an integer number (657901).

2^1315801 is an apocalyptic number.

It is an amenable number.

1315801 is a deficient number, since it is larger than the sum of its proper divisors (1).

1315801 is an equidigital number, since it uses as much as digits as its factorization.

1315801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 1315801 is about 1147.0836935464. The cubic root of 1315801 is about 109.5796908130.

It can be divided in two parts, 1315 and 801, that added together give a square (2116 = 46²).

The spelling of 1315801 in words is "one million, three hundred fifteen thousand, eight hundred one".