1725531 has 4 divisors (see below), whose sum is σ = 2300712. Its totient is φ = 1150352.

The previous prime is 1725527. The next prime is 1725539. The reversal of 1725531 is 1355271.

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

It is a cyclic number.

It is not a de Polignac number, because 1725531 - 2² = 1725527 is a prime.

It is a super-2 number, since 2×1725531² = 5954914463922, which contains 22 as substring.

It is a D-number.

1725531 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1725539) 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, 287586 + ... + 287591.

It is an arithmetic number, because the mean of its divisors is an integer number (575178).

2^1725531 is an apocalyptic number.

1725531 is a deficient number, since it is larger than the sum of its proper divisors (575181).

1725531 is an equidigital number, since it uses as much as digits as its factorization.

1725531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575180.

The product of its digits is 1050, while the sum is 24.

The square root of 1725531 is about 1313.5946863474. The cubic root of 1725531 is about 119.9428199803.

The spelling of 1725531 in words is "one million, seven hundred twenty-five thousand, five hundred thirty-one".