1375541 has 4 divisors (see below), whose sum is σ = 1378284. Its totient is φ = 1372800.

The previous prime is 1375531. The next prime is 1375547. The reversal of 1375541 is 1455731.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 819025 + 556516 = 905^2 + 746^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1375541 is a prime.

It is a super-2 number, since 2×1375541² = 3784226085362, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1375541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1375547) 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 3 ways as a sum of consecutive naturals, for example, 380 + ... + 1701.

It is an arithmetic number, because the mean of its divisors is an integer number (344571).

2^1375541 is an apocalyptic number.

It is an amenable number.

1375541 is a deficient number, since it is larger than the sum of its proper divisors (2743).

1375541 is an equidigital number, since it uses as much as digits as its factorization.

1375541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2742.

The product of its digits is 2100, while the sum is 26.

The square root of 1375541 is about 1172.8346004446. The cubic root of 1375541 is about 111.2135865341.

The spelling of 1375541 in words is "one million, three hundred seventy-five thousand, five hundred forty-one".