445997755 has 40 divisors (see below), whose sum is σ = 632443392. Its totient is φ = 301883904.

The previous prime is 445997749. The next prime is 445997759. The reversal of 445997755 is 557799544.

It is a happy number.

It is not a de Polignac number, because 445997755 - 2⁹ = 445997243 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 445997696 and 445997705.

It is not an unprimeable number, because it can be changed into a prime (445997759) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1164294 + ... + 1164676.

Almost surely, 2^445997755 is an apocalyptic number.

445997755 is a deficient number, since it is larger than the sum of its proper divisors (186445637).

445997755 is an frugal number, since it uses more digits than its factorization.

With its successor (445997756) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (492).

445997755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513 (or 492 counting only the distinct ones).

The product of its digits is 7938000, while the sum is 55.

The square root of 445997755 is about 21118.6589299605. The cubic root of 445997755 is about 764.0308430071.

The spelling of 445997755 in words is "four hundred forty-five million, nine hundred ninety-seven thousand, seven hundred fifty-five".