1321541 has 8 divisors (see below), whose sum is σ = 1448160. Its totient is φ = 1198512.

The previous prime is 1321517. The next prime is 1321549. The reversal of 1321541 is 1451231.

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

It is a cyclic number.

It is not a de Polignac number, because 1321541 - 2⁶ = 1321477 is a prime.

It is a super-2 number, since 2×1321541² = 3492941229362, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95 + ... + 1628.

It is an arithmetic number, because the mean of its divisors is an integer number (181020).

2^1321541 is an apocalyptic number.

It is an amenable number.

1321541 is a deficient number, since it is larger than the sum of its proper divisors (126619).

1321541 is a wasteful number, since it uses less digits than its factorization.

1321541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1795.

The product of its digits is 120, while the sum is 17.

The square root of 1321541 is about 1149.5829678627. The cubic root of 1321541 is about 109.7388017556.

Adding to 1321541 its reverse (1451231), we get a palindrome (2772772).

The spelling of 1321541 in words is "one million, three hundred twenty-one thousand, five hundred forty-one".