442680553 has 12 divisors (see below), whose sum is σ = 515358660. Its totient is φ = 379143072.

The previous prime is 442680547. The next prime is 442680559. The reversal of 442680553 is 355086244.

It is an interprime number because it is at equal distance from previous prime (442680547) and next prime (442680559).

It can be written as a sum of positive squares in 2 ways, for example, as 163021824 + 279658729 = 12768^2 + 16723^2 .

It is not a de Polignac number, because 442680553 - 2⁵ = 442680521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442680559) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 79075 + ... + 84487.

It is an arithmetic number, because the mean of its divisors is an integer number (42946555).

Almost surely, 2^442680553 is an apocalyptic number.

It is an amenable number.

442680553 is a deficient number, since it is larger than the sum of its proper divisors (72678107).

442680553 is a wasteful number, since it uses less digits than its factorization.

442680553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7096 (or 7089 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 37.

The square root of 442680553 is about 21039.9751188066. The cubic root of 442680553 is about 762.1319140003.

The spelling of 442680553 in words is "four hundred forty-two million, six hundred eighty thousand, five hundred fifty-three".