515450442 has 64 divisors (see below), whose sum is σ = 1150692480. Its totient is φ = 152908800.

The previous prime is 515450407. The next prime is 515450459. The reversal of 515450442 is 244054515.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 283717 + ... + 285527.

It is an arithmetic number, because the mean of its divisors is an integer number (17979570).

Almost surely, 2^515450442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 515450442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (575346240).

515450442 is an abundant number, since it is smaller than the sum of its proper divisors (635242038).

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

515450442 is a wasteful number, since it uses less digits than its factorization.

515450442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1959.

The product of its (nonzero) digits is 16000, while the sum is 30.

The square root of 515450442 is about 22703.5336897145. The cubic root of 515450442 is about 801.7930832712.

The spelling of 515450442 in words is "five hundred fifteen million, four hundred fifty thousand, four hundred forty-two".