1675521 has 12 divisors (see below), whose sum is σ = 2450448. Its totient is φ = 1103064.

The previous prime is 1675507. The next prime is 1675561. The reversal of 1675521 is 1255761.

1675521 = T₁₅₈ + T₁₅₉ + ... + T₂₄₀.

It is not a de Polignac number, because 1675521 - 2⁷ = 1675393 is a prime.

1675521 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1675561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 375 + ... + 1868.

It is an arithmetic number, because the mean of its divisors is an integer number (204204).

2^1675521 is an apocalyptic number.

It is an amenable number.

1675521 is a deficient number, since it is larger than the sum of its proper divisors (774927).

1675521 is a wasteful number, since it uses less digits than its factorization.

1675521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2332 (or 2329 counting only the distinct ones).

The product of its digits is 2100, while the sum is 27.

The square root of 1675521 is about 1294.4191747653. The cubic root of 1675521 is about 118.7726988926.

The spelling of 1675521 in words is "one million, six hundred seventy-five thousand, five hundred twenty-one".