376445021 has 4 divisors (see below), whose sum is σ = 376720572. Its totient is φ = 376169472.

The previous prime is 376444987. The next prime is 376445029. The reversal of 376445021 is 120544673.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 357739396 + 18705625 = 18914^2 + 4325^2 .

It is a cyclic number.

It is not a de Polignac number, because 376445021 - 2¹⁰ = 376443997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (376445029) 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 3 ways as a sum of consecutive naturals, for example, 135716 + ... + 138461.

It is an arithmetic number, because the mean of its divisors is an integer number (94180143).

Almost surely, 2^376445021 is an apocalyptic number.

It is an amenable number.

376445021 is a deficient number, since it is larger than the sum of its proper divisors (275551).

376445021 is a wasteful number, since it uses less digits than its factorization.

376445021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275550.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 376445021 is about 19402.1911391471. The cubic root of 376445021 is about 722.0498561347.

Adding to 376445021 its reverse (120544673), we get a palindrome (496989694).

The spelling of 376445021 in words is "three hundred seventy-six million, four hundred forty-five thousand, twenty-one".