261371459 has 2 divisors, whose sum is σ = 261371460. Its totient is φ = 261371458.

The previous prime is 261371449. The next prime is 261371483. The reversal of 261371459 is 954173162.

261371459 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 261371459 - 2⁴ = 261371443 is a prime.

It is not a weakly prime, because it can be changed into another prime (261371419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130685729 + 130685730.

It is an arithmetic number, because the mean of its divisors is an integer number (130685730).

Almost surely, 2^261371459 is an apocalyptic number.

261371459 is a deficient number, since it is larger than the sum of its proper divisors (1).

261371459 is an equidigital number, since it uses as much as digits as its factorization.

261371459 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 38.

The square root of 261371459 is about 16166.9867012997. The cubic root of 261371459 is about 639.3706859210.

The spelling of 261371459 in words is "two hundred sixty-one million, three hundred seventy-one thousand, four hundred fifty-nine".