375021 has 6 divisors (see below), whose sum is σ = 541710. Its totient is φ = 250008.

The previous prime is 375019. The next prime is 375029. The reversal of 375021 is 120573.

375021 is nontrivially palindromic in base 2.

It can be written as a sum of positive squares in only one way, i.e., 260100 + 114921 = 510^2 + 339^2 .

It is not a de Polignac number, because 375021 - 2¹ = 375019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 374985 and 375003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (375029) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20826 + ... + 20843.

It is an arithmetic number, because the mean of its divisors is an integer number (90285).

375021 is a Friedman number, since it can be written as (50^3+7)*(2+1), using all its digits and the basic arithmetic operations.

2³⁷⁵⁰²¹ is an apocalyptic number.

It is an amenable number.

375021 is a deficient number, since it is larger than the sum of its proper divisors (166689).

375021 is a wasteful number, since it uses less digits than its factorization.

375021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41675 (or 41672 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 18.

The square root of 375021 is about 612.3895818840. The cubic root of 375021 is about 72.1138245898.

Adding to 375021 its reverse (120573), we get a palindrome (495594).

The spelling of 375021 in words is "three hundred seventy-five thousand, twenty-one".