3997553 has 8 divisors (see below), whose sum is σ = 4631808. Its totient is φ = 3379104.

The previous prime is 3997549. The next prime is 3997559. The reversal of 3997553 is 3557993.

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

It is a cyclic number.

It is not a de Polignac number, because 3997553 - 2² = 3997549 is a prime.

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 3997553.

It is not an unprimeable number, because it can be changed into a prime (3997559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3401 + ... + 4422.

It is an arithmetic number, because the mean of its divisors is an integer number (578976).

Almost surely, 2^3997553 is an apocalyptic number.

It is an amenable number.

3997553 is a deficient number, since it is larger than the sum of its proper divisors (634255).

3997553 is an equidigital number, since it uses as much as digits as its factorization.

3997553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7903.

The product of its digits is 127575, while the sum is 41.

The square root of 3997553 is about 1999.3881564119. The cubic root of 3997553 is about 158.7077288407.

The spelling of 3997553 in words is "three million, nine hundred ninety-seven thousand, five hundred fifty-three".