375521 has 8 divisors (see below), whose sum is σ = 406080. Its totient is φ = 346192.

The previous prime is 375511. The next prime is 375523. The reversal of 375521 is 125573.

375521 is an esthetic number in base 14, because in such base its adjacent digits differ by 1.

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 375521 - 2⁶ = 375457 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (375523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 386 + ... + 948.

It is an arithmetic number, because the mean of its divisors is an integer number (50760).

2³⁷⁵⁵²¹ is an apocalyptic number.

It is an amenable number.

375521 is a deficient number, since it is larger than the sum of its proper divisors (30559).

375521 is a wasteful number, since it uses less digits than its factorization.

375521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615.

The product of its digits is 1050, while the sum is 23.

The square root of 375521 is about 612.7976827632. The cubic root of 375521 is about 72.1458591512.

The spelling of 375521 in words is "three hundred seventy-five thousand, five hundred twenty-one".