515440052 has 12 divisors (see below), whose sum is σ = 919039716. Its totient is φ = 252857280.

The previous prime is 515440039. The next prime is 515440061. The reversal of 515440052 is 250044515.

It can be written as a sum of positive squares in 2 ways, for example, as 217739536 + 297700516 = 14756^2 + 17254^2 .

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1215449 + ... + 1215872.

It is an arithmetic number, because the mean of its divisors is an integer number (76586643).

Almost surely, 2^515440052 is an apocalyptic number.

It is an amenable number.

515440052 is a deficient number, since it is larger than the sum of its proper divisors (403599664).

515440052 is a wasteful number, since it uses less digits than its factorization.

515440052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2431378 (or 2431376 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 515440052 is about 22703.3048695559. The cubic root of 515440052 is about 801.7876959533.

Adding to 515440052 its reverse (250044515), we get a palindrome (765484567).

The spelling of 515440052 in words is "five hundred fifteen million, four hundred forty thousand, fifty-two".