515444442 has 32 divisors (see below), whose sum is σ = 1048965120. Its totient is φ = 168824880.

The previous prime is 515444431. The next prime is 515444443. The reversal of 515444442 is 244444515.

It is not an unprimeable number, because it can be changed into a prime (515444443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92409 + ... + 97827.

It is an arithmetic number, because the mean of its divisors is an integer number (32780160).

Almost surely, 2^515444442 is an apocalyptic number.

515444442 is an abundant number, since it is smaller than the sum of its proper divisors (533520678).

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

515444442 is a wasteful number, since it uses less digits than its factorization.

515444442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5698.

The product of its digits is 51200, while the sum is 33.

The square root of 515444442 is about 22703.4015513094. The cubic root of 515444442 is about 801.7899722206.

Adding to 515444442 its reverse (244444515), we get a palindrome (759888957).

The spelling of 515444442 in words is "five hundred fifteen million, four hundred forty-four thousand, four hundred forty-two".