261410033 has 4 divisors (see below), whose sum is σ = 261443700. Its totient is φ = 261376368.

The previous prime is 261410027. The next prime is 261410047. The reversal of 261410033 is 330014162.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 330014162 = 2 ⋅165007081.

It can be written as a sum of positive squares in 2 ways, for example, as 194546704 + 66863329 = 13948^2 + 8177^2 .

It is a cyclic number.

It is not a de Polignac number, because 261410033 - 2¹⁸ = 261147889 is a prime.

It is a super-2 number, since 2×261410033² = 136670410706122178, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 261409987 and 261410014.

It is not an unprimeable number, because it can be changed into a prime (261412033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1391 + ... + 22907.

It is an arithmetic number, because the mean of its divisors is an integer number (65360925).

Almost surely, 2^261410033 is an apocalyptic number.

It is an amenable number.

261410033 is a deficient number, since it is larger than the sum of its proper divisors (33667).

261410033 is a wasteful number, since it uses less digits than its factorization.

261410033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33666.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 261410033 is about 16168.1796439797. The cubic root of 261410033 is about 639.4021378014.

Adding to 261410033 its reverse (330014162), we get a palindrome (591424195).

The spelling of 261410033 in words is "two hundred sixty-one million, four hundred ten thousand, thirty-three".