4155761 has 2 divisors, whose sum is σ = 4155762. Its totient is φ = 4155760.

The previous prime is 4155751. The next prime is 4155763. The reversal of 4155761 is 1675514.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2608225 + 1547536 = 1615^2 + 1244^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4155761 is a prime.

Together with 4155763, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4155763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2077880 + 2077881.

It is an arithmetic number, because the mean of its divisors is an integer number (2077881).

Almost surely, 2^4155761 is an apocalyptic number.

It is an amenable number.

4155761 is a deficient number, since it is larger than the sum of its proper divisors (1).

4155761 is an equidigital number, since it uses as much as digits as its factorization.

4155761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4200, while the sum is 29.

The square root of 4155761 is about 2038.5683702049. The cubic root of 4155761 is about 160.7743840328.

The spelling of 4155761 in words is "four million, one hundred fifty-five thousand, seven hundred sixty-one".