1391541 has 8 divisors (see below), whose sum is σ = 1953120. Its totient is φ = 878832.

The previous prime is 1391521. The next prime is 1391549. The reversal of 1391541 is 1451931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1391541 - 2⁷ = 1391413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1391549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12150 + ... + 12263.

It is an arithmetic number, because the mean of its divisors is an integer number (244140).

2^1391541 is an apocalyptic number.

It is an amenable number.

1391541 is a deficient number, since it is larger than the sum of its proper divisors (561579).

1391541 is a wasteful number, since it uses less digits than its factorization.

1391541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24435.

The product of its digits is 540, while the sum is 24.

The square root of 1391541 is about 1179.6359607947. The cubic root of 1391541 is about 111.6431296151.

The spelling of 1391541 in words is "one million, three hundred ninety-one thousand, five hundred forty-one".