445145031 has 16 divisors (see below), whose sum is σ = 661567200. Its totient is φ = 295821504.

The previous prime is 445145023. The next prime is 445145047. The reversal of 445145031 is 130541544.

It is a happy number.

It is not a de Polignac number, because 445145031 - 2³ = 445145023 is a prime.

It is a super-2 number, since 2×445145031² = 396308197247981922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 445144986 and 445145004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445145011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17446 + ... + 34563.

It is an arithmetic number, because the mean of its divisors is an integer number (41347950).

Almost surely, 2^445145031 is an apocalyptic number.

445145031 is a deficient number, since it is larger than the sum of its proper divisors (216422169).

445145031 is a wasteful number, since it uses less digits than its factorization.

445145031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52335 (or 52329 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 445145031 is about 21098.4603940667. The cubic root of 445145031 is about 763.5436035635.

Adding to 445145031 its reverse (130541544), we get a palindrome (575686575).

The spelling of 445145031 in words is "four hundred forty-five million, one hundred forty-five thousand, thirty-one".