515400345 has 48 divisors (see below), whose sum is σ = 913386240. Its totient is φ = 268789248.

The previous prime is 515400331. The next prime is 515400349. The reversal of 515400345 is 543004515.

515400345 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 515400345 - 2⁵ = 515400313 is a prime.

It is a super-2 number, since 2×515400345² = 531275031252238050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (515400349) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 401074 + ... + 402356.

It is an arithmetic number, because the mean of its divisors is an integer number (19028880).

Almost surely, 2^515400345 is an apocalyptic number.

It is an amenable number.

515400345 is a deficient number, since it is larger than the sum of its proper divisors (397985895).

515400345 is a wasteful number, since it uses less digits than its factorization.

515400345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1486 (or 1483 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 515400345 is about 22702.4303765037. The cubic root of 515400345 is about 801.7671068137.

The spelling of 515400345 in words is "five hundred fifteen million, four hundred thousand, three hundred forty-five".