515442002 has 4 divisors (see below), whose sum is σ = 773163006. Its totient is φ = 257721000.

The previous prime is 515442001. The next prime is 515442007. The reversal of 515442002 is 200244515.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 496353841 + 19088161 = 22279^2 + 4369^2 .

It is not an unprimeable number, because it can be changed into a prime (515442001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128860499 + ... + 128860502.

Almost surely, 2^515442002 is an apocalyptic number.

515442002 is a deficient number, since it is larger than the sum of its proper divisors (257721004).

515442002 is a wasteful number, since it uses less digits than its factorization.

515442002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257721003.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 515442002 is about 22703.3478148048. The cubic root of 515442002 is about 801.7887070532.

Adding to 515442002 its reverse (200244515), we get a palindrome (715686517).

The spelling of 515442002 in words is "five hundred fifteen million, four hundred forty-two thousand, two".