4145261 has 2 divisors, whose sum is σ = 4145262. Its totient is φ = 4145260.

The previous prime is 4145257. The next prime is 4145291. The reversal of 4145261 is 1625414.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3924361 + 220900 = 1981^2 + 470^2 .

It is a cyclic number.

It is not a de Polignac number, because 4145261 - 2² = 4145257 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4145201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2072630 + 2072631.

It is an arithmetic number, because the mean of its divisors is an integer number (2072631).

Almost surely, 2^4145261 is an apocalyptic number.

It is an amenable number.

4145261 is a deficient number, since it is larger than the sum of its proper divisors (1).

4145261 is an equidigital number, since it uses as much as digits as its factorization.

4145261 is an evil number, because the sum of its binary digits is even.

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

The square root of 4145261 is about 2035.9914046970. The cubic root of 4145261 is about 160.6388649480.

It can be divided in two parts, 41 and 45261, that multiplied together give a triangular number (1855701 = T₁₉₂₆).

The spelling of 4145261 in words is "four million, one hundred forty-five thousand, two hundred sixty-one".