3973551 has 8 divisors (see below), whose sum is σ = 5480880. Its totient is φ = 2557632.

The previous prime is 3973531. The next prime is 3973553. The reversal of 3973551 is 1553793.

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

It is not a de Polignac number, because 3973551 - 2¹³ = 3965359 is a prime.

3973551 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3973553) 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, 22750 + ... + 22923.

It is an arithmetic number, because the mean of its divisors is an integer number (685110).

Almost surely, 2^3973551 is an apocalyptic number.

3973551 is a deficient number, since it is larger than the sum of its proper divisors (1507329).

3973551 is a wasteful number, since it uses less digits than its factorization.

3973551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45705.

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

The square root of 3973551 is about 1993.3767832500. The cubic root of 3973551 is about 158.3894547745.

The spelling of 3973551 in words is "three million, nine hundred seventy-three thousand, five hundred fifty-one".