515424540 has 48 divisors (see below), whose sum is σ = 1492958880. Its totient is φ = 132706560.

The previous prime is 515424529. The next prime is 515424589. The reversal of 515424540 is 45424515.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 515424498 and 515424507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146371 + ... + 149850.

It is an arithmetic number, because the mean of its divisors is an integer number (31103310).

Almost surely, 2^515424540 is an apocalyptic number.

It is an amenable number.

515424540 is an abundant number, since it is smaller than the sum of its proper divisors (977534340).

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

515424540 is a wasteful number, since it uses less digits than its factorization.

515424540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296262 (or 296260 counting only the distinct ones).

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

The square root of 515424540 is about 22702.9632427135. The cubic root of 515424540 is about 801.7796526930.

The spelling of 515424540 in words is "five hundred fifteen million, four hundred twenty-four thousand, five hundred forty".