516140551 has 4 divisors (see below), whose sum is σ = 516487752. Its totient is φ = 515793352.

The previous prime is 516140543. The next prime is 516140557. The reversal of 516140551 is 155041615.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 516140551 - 2³ = 516140543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516140557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171361 + ... + 174346.

It is an arithmetic number, because the mean of its divisors is an integer number (129121938).

Almost surely, 2^516140551 is an apocalyptic number.

516140551 is a deficient number, since it is larger than the sum of its proper divisors (347201).

516140551 is a wasteful number, since it uses less digits than its factorization.

516140551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347200.

The product of its (nonzero) digits is 3000, while the sum is 28.

The square root of 516140551 is about 22718.7268789428. The cubic root of 516140551 is about 802.1507496425.

The spelling of 516140551 in words is "five hundred sixteen million, one hundred forty thousand, five hundred fifty-one".