516432861 has 16 divisors (see below), whose sum is σ = 874384000. Its totient is φ = 295104384.

The previous prime is 516432859. The next prime is 516432877. The reversal of 516432861 is 168234615.

It is a happy number.

516432861 is a `hidden beast` number, since 5 + 1 + 643 + 2 + 8 + 6 + 1 = 666.

It is not a de Polignac number, because 516432861 - 2¹ = 516432859 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516432461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1366036 + ... + 1366413.

It is an arithmetic number, because the mean of its divisors is an integer number (54649000).

Almost surely, 2^516432861 is an apocalyptic number.

It is an amenable number.

516432861 is a deficient number, since it is larger than the sum of its proper divisors (357951139).

516432861 is a wasteful number, since it uses less digits than its factorization.

516432861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2732465 (or 2732459 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 516432861 is about 22725.1592073631. The cubic root of 516432861 is about 802.3021505446.

It can be divided in two parts, 5164 and 32861, that added together give a square (38025 = 195²).

The spelling of 516432861 in words is "five hundred sixteen million, four hundred thirty-two thousand, eight hundred sixty-one".