516171540 has 48 divisors (see below), whose sum is σ = 1446818688. Its totient is φ = 137499264.

The previous prime is 516171533. The next prime is 516171563. The reversal of 516171540 is 45171615.

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 = 516171498 and 516171507.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59734 + ... + 67826.

It is an arithmetic number, because the mean of its divisors is an integer number (30142056).

Almost surely, 2^516171540 is an apocalyptic number.

It is an amenable number.

516171540 is an abundant number, since it is smaller than the sum of its proper divisors (930647148).

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

516171540 is a wasteful number, since it uses less digits than its factorization.

516171540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9168 (or 9166 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 30.

The square root of 516171540 is about 22719.4088831554. The cubic root of 516171540 is about 802.1668029908.

The spelling of 516171540 in words is "five hundred sixteen million, one hundred seventy-one thousand, five hundred forty".