3975531 has 8 divisors (see below), whose sum is σ = 6057984. Its totient is φ = 2271720.

The previous prime is 3975529. The next prime is 3975547. The reversal of 3975531 is 1355793.

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

It is not a de Polignac number, because 3975531 - 2¹ = 3975529 is a prime.

It is a super-2 number, since 2×3975531² = 31609693463922, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 3975492 and 3975501.

It is not an unprimeable number, because it can be changed into a prime (3975511) 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 7 ways as a sum of consecutive naturals, for example, 94635 + ... + 94676.

It is an arithmetic number, because the mean of its divisors is an integer number (757248).

Almost surely, 2^3975531 is an apocalyptic number.

3975531 is a deficient number, since it is larger than the sum of its proper divisors (2082453).

3975531 is a wasteful number, since it uses less digits than its factorization.

3975531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189321.

The product of its digits is 14175, while the sum is 33.

The square root of 3975531 is about 1993.8733660892. The cubic root of 3975531 is about 158.4157586225.

The spelling of 3975531 in words is "three million, nine hundred seventy-five thousand, five hundred thirty-one".