1545541 has 4 divisors (see below), whose sum is σ = 1556800. Its totient is φ = 1534284.

The previous prime is 1545539. The next prime is 1545547. The reversal of 1545541 is 1455451.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1455451 = 1117 ⋅1303.

It is a cyclic number.

It is not a de Polignac number, because 1545541 - 2¹ = 1545539 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1545547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5421 + ... + 5698.

It is an arithmetic number, because the mean of its divisors is an integer number (389200).

2^1545541 is an apocalyptic number.

It is an amenable number.

1545541 is a deficient number, since it is larger than the sum of its proper divisors (11259).

1545541 is a wasteful number, since it uses less digits than its factorization.

1545541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11258.

The product of its digits is 2000, while the sum is 25.

The square root of 1545541 is about 1243.1978925336. The cubic root of 1545541 is about 115.6183703041.

The spelling of 1545541 in words is "one million, five hundred forty-five thousand, five hundred forty-one".