522420445 has 8 divisors (see below), whose sum is σ = 627074136. Its totient is φ = 417823296.

The previous prime is 522420439. The next prime is 522420467. The reversal of 522420445 is 544024225.

It can be written as a sum of positive squares in 4 ways, for example, as 171007929 + 351412516 = 13077^2 + 18746^2 .

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 522420445 - 2⁷ = 522420317 is a prime.

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, 9919 + ... + 33811.

It is an arithmetic number, because the mean of its divisors is an integer number (78384267).

Almost surely, 2^522420445 is an apocalyptic number.

It is an amenable number.

522420445 is a deficient number, since it is larger than the sum of its proper divisors (104653691).

522420445 is a wasteful number, since it uses less digits than its factorization.

522420445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28271.

The product of its (nonzero) digits is 12800, while the sum is 28.

The square root of 522420445 is about 22856.5186544233. The cubic root of 522420445 is about 805.3909061687.

The spelling of 522420445 in words is "five hundred twenty-two million, four hundred twenty thousand, four hundred forty-five".