516375381 has 8 divisors (see below), whose sum is σ = 690715584. Its totient is φ = 343142720.

The previous prime is 516375373. The next prime is 516375383. The reversal of 516375381 is 183573615.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 516375381 - 2³ = 516375373 is a prime.

It is a super-2 number, since 2×516375381² = 533287068205790322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516375383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 275796 + ... + 277661.

It is an arithmetic number, because the mean of its divisors is an integer number (86339448).

Almost surely, 2^516375381 is an apocalyptic number.

It is an amenable number.

516375381 is a deficient number, since it is larger than the sum of its proper divisors (174340203).

516375381 is a wasteful number, since it uses less digits than its factorization.

516375381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553771.

The product of its digits is 75600, while the sum is 39.

The square root of 516375381 is about 22723.8944945623. The cubic root of 516375381 is about 802.2723835009.

The spelling of 516375381 in words is "five hundred sixteen million, three hundred seventy-five thousand, three hundred eighty-one".