1361533 has 2 divisors, whose sum is σ = 1361534. Its totient is φ = 1361532.

The previous prime is 1361497. The next prime is 1361573. The reversal of 1361533 is 3351631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1077444 + 284089 = 1038^2 + 533^2 .

It is an emirp because it is prime and its reverse (3351631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1361533 - 2⁹ = 1361021 is a prime.

It is a super-2 number, since 2×1361533² = 3707544220178, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1361573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 680766 + 680767.

It is an arithmetic number, because the mean of its divisors is an integer number (680767).

2^1361533 is an apocalyptic number.

It is an amenable number.

1361533 is a deficient number, since it is larger than the sum of its proper divisors (1).

1361533 is an equidigital number, since it uses as much as digits as its factorization.

1361533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 810, while the sum is 22.

The square root of 1361533 is about 1166.8474621818. The cubic root of 1361533 is about 110.8347784059.

The spelling of 1361533 in words is "one million, three hundred sixty-one thousand, five hundred thirty-three".