515364540 has 48 divisors (see below), whose sum is σ = 1446617760. Its totient is φ = 137088000.

The previous prime is 515364533. The next prime is 515364581. The reversal of 515364540 is 45463515.

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, 14040 + ... + 35040.

It is an arithmetic number, because the mean of its divisors is an integer number (30137870).

Almost surely, 2^515364540 is an apocalyptic number.

It is an amenable number.

515364540 is an abundant number, since it is smaller than the sum of its proper divisors (931253220).

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

515364540 is a wasteful number, since it uses less digits than its factorization.

515364540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21422 (or 21420 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 33.

The square root of 515364540 is about 22701.6417908485. The cubic root of 515364540 is about 801.7485400586.

The spelling of 515364540 in words is "five hundred fifteen million, three hundred sixty-four thousand, five hundred forty".