2391541 has 2 divisors, whose sum is σ = 2391542. Its totient is φ = 2391540.

The previous prime is 2391539. The next prime is 2391547. The reversal of 2391541 is 1451932.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1572516 + 819025 = 1254^2 + 905^2 .

It is a cyclic number.

It is not a de Polignac number, because 2391541 - 2¹ = 2391539 is a prime.

Together with 2391539, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2391547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1195770 + 1195771.

It is an arithmetic number, because the mean of its divisors is an integer number (1195771).

2^2391541 is an apocalyptic number.

It is an amenable number.

2391541 is a deficient number, since it is larger than the sum of its proper divisors (1).

2391541 is an equidigital number, since it uses as much as digits as its factorization.

2391541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 25.

The square root of 2391541 is about 1546.4607980806. The cubic root of 2391541 is about 133.7291067023.

The spelling of 2391541 in words is "two million, three hundred ninety-one thousand, five hundred forty-one".