261054413 has 2 divisors, whose sum is σ = 261054414. Its totient is φ = 261054412.

The previous prime is 261054377. The next prime is 261054449. The reversal of 261054413 is 314450162.

It is a balanced prime because it is at equal distance from previous prime (261054377) and next prime (261054449).

It can be written as a sum of positive squares in only one way, i.e., 260435044 + 619369 = 16138^2 + 787^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-261054413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (261054613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130527206 + 130527207.

It is an arithmetic number, because the mean of its divisors is an integer number (130527207).

Almost surely, 2^261054413 is an apocalyptic number.

It is an amenable number.

261054413 is a deficient number, since it is larger than the sum of its proper divisors (1).

261054413 is an equidigital number, since it uses as much as digits as its factorization.

261054413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 261054413 is about 16157.1783737136. The cubic root of 261054413 is about 639.1120604669.

The spelling of 261054413 in words is "two hundred sixty-one million, fifty-four thousand, four hundred thirteen".