373521 has 8 divisors (see below), whose sum is σ = 524320. Its totient is φ = 235872.

The previous prime is 373517. The next prime is 373553. The reversal of 373521 is 125373.

It is a happy number.

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

It is not a de Polignac number, because 373521 - 2² = 373517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (373501) 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, 3220 + ... + 3333.

It is an arithmetic number, because the mean of its divisors is an integer number (65540).

2³⁷³⁵²¹ is an apocalyptic number.

It is an amenable number.

373521 is a deficient number, since it is larger than the sum of its proper divisors (150799).

373521 is a wasteful number, since it uses less digits than its factorization.

373521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6575.

The product of its digits is 630, while the sum is 21.

The square root of 373521 is about 611.1636442067. The cubic root of 373521 is about 72.0175497343.

Adding to 373521 its reverse (125373), we get a palindrome (498894).

The spelling of 373521 in words is "three hundred seventy-three thousand, five hundred twenty-one".