445105520 has 20 divisors (see below), whose sum is σ = 1034870520. Its totient is φ = 178042176.

The previous prime is 445105487. The next prime is 445105537. The reversal of 445105520 is 25501544.

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 445105520.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2781830 + ... + 2781989.

It is an arithmetic number, because the mean of its divisors is an integer number (51743526).

Almost surely, 2^445105520 is an apocalyptic number.

445105520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

445105520 is an abundant number, since it is smaller than the sum of its proper divisors (589765000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

445105520 is a wasteful number, since it uses less digits than its factorization.

445105520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5563832 (or 5563826 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 445105520 is about 21097.5240253448. The cubic root of 445105520 is about 763.5210122267.

The spelling of 445105520 in words is "four hundred forty-five million, one hundred five thousand, five hundred twenty".