261450041 has 4 divisors (see below), whose sum is σ = 261494784. Its totient is φ = 261405300.

The previous prime is 261449983. The next prime is 261450043. The reversal of 261450041 is 140054162.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 261450041 - 2¹⁰ = 261449017 is a prime.

It is a super-2 number, since 2×261450041² = 136712247877803362, 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 = 261449989 and 261450016.

It is not an unprimeable number, because it can be changed into a prime (261450043) 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, 12005 + ... + 25826.

It is an arithmetic number, because the mean of its divisors is an integer number (65373696).

Almost surely, 2^261450041 is an apocalyptic number.

It is an amenable number.

261450041 is a deficient number, since it is larger than the sum of its proper divisors (44743).

261450041 is an equidigital number, since it uses as much as digits as its factorization.

261450041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44742.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 261450041 is about 16169.4168416799. The cubic root of 261450041 is about 639.4347556464.

The spelling of 261450041 in words is "two hundred sixty-one million, four hundred fifty thousand, forty-one".