515554242 has 32 divisors (see below), whose sum is σ = 1216425984. Its totient is φ = 142549200.

The previous prime is 515554241. The next prime is 515554261. The reversal of 515554242 is 242455515.

It is not an unprimeable number, because it can be changed into a prime (515554241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 196684 + ... + 199287.

It is an arithmetic number, because the mean of its divisors is an integer number (38013312).

Almost surely, 2^515554242 is an apocalyptic number.

515554242 is an abundant number, since it is smaller than the sum of its proper divisors (700871742).

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

515554242 is a wasteful number, since it uses less digits than its factorization.

515554242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396014.

The product of its digits is 40000, while the sum is 33.

The square root of 515554242 is about 22705.8195623941. The cubic root of 515554242 is about 801.8469006248.

The spelling of 515554242 in words is "five hundred fifteen million, five hundred fifty-four thousand, two hundred forty-two".