515251442 has 8 divisors (see below), whose sum is σ = 773183232. Its totient is φ = 257523700.

The previous prime is 515251421. The next prime is 515251489. The reversal of 515251442 is 244152515.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 44534 + ... + 54897.

It is an arithmetic number, because the mean of its divisors is an integer number (96647904).

Almost surely, 2^515251442 is an apocalyptic number.

515251442 is a deficient number, since it is larger than the sum of its proper divisors (257931790).

515251442 is a wasteful number, since it uses less digits than its factorization.

515251442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102024.

The product of its digits is 8000, while the sum is 29.

The square root of 515251442 is about 22699.1506889575. The cubic root of 515251442 is about 801.6898872130.

The spelling of 515251442 in words is "five hundred fifteen million, two hundred fifty-one thousand, four hundred forty-two".