1081513 has 2 divisors, whose sum is σ = 1081514. Its totient is φ = 1081512.

The previous prime is 1081501. The next prime is 1081541. The reversal of 1081513 is 3151801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 824464 + 257049 = 908^2 + 507^2 .

It is a cyclic number.

It is not a de Polignac number, because 1081513 - 2¹³ = 1073321 is a prime.

1081513 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1081583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 540756 + 540757.

It is an arithmetic number, because the mean of its divisors is an integer number (540757).

2^1081513 is an apocalyptic number.

It is an amenable number.

1081513 is a deficient number, since it is larger than the sum of its proper divisors (1).

1081513 is an equidigital number, since it uses as much as digits as its factorization.

1081513 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 1081513 is about 1039.9581722358. The cubic root of 1081513 is about 102.6464454375.

The spelling of 1081513 in words is "one million, eighty-one thousand, five hundred thirteen".