445101621 has 4 divisors (see below), whose sum is σ = 593468832. Its totient is φ = 296734412.

The previous prime is 445101577. The next prime is 445101623. The reversal of 445101621 is 126101544.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 445101621 - 2¹⁰ = 445100597 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 445101591 and 445101600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445101623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74183601 + ... + 74183606.

It is an arithmetic number, because the mean of its divisors is an integer number (148367208).

Almost surely, 2^445101621 is an apocalyptic number.

It is an amenable number.

445101621 is a deficient number, since it is larger than the sum of its proper divisors (148367211).

445101621 is a wasteful number, since it uses less digits than its factorization.

445101621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148367210.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 445101621 is about 21097.4316209343. The cubic root of 445101621 is about 763.5187828099.

The spelling of 445101621 in words is "four hundred forty-five million, one hundred one thousand, six hundred twenty-one".