416521445 has 8 divisors (see below), whose sum is σ = 499998744. Its totient is φ = 333101824.

The previous prime is 416521433. The next prime is 416521451. The reversal of 416521445 is 544125614.

It can be written as a sum of positive squares in 4 ways, for example, as 21585316 + 394936129 = 4646^2 + 19873^2 .

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 416521445 - 2¹² = 416517349 is a prime.

It is a super-2 number, since 2×416521445² = 346980228289776050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3497 + ... + 29073.

It is an arithmetic number, because the mean of its divisors is an integer number (62499843).

Almost surely, 2^416521445 is an apocalyptic number.

It is an amenable number.

416521445 is a deficient number, since it is larger than the sum of its proper divisors (83477299).

416521445 is a wasteful number, since it uses less digits than its factorization.

416521445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28839.

The product of its digits is 19200, while the sum is 32.

The square root of 416521445 is about 20408.8570233612. The cubic root of 416521445 is about 746.8140080677.

The spelling of 416521445 in words is "four hundred sixteen million, five hundred twenty-one thousand, four hundred forty-five".