516906377 has 4 divisors (see below), whose sum is σ = 556668420. Its totient is φ = 477144336.

The previous prime is 516906373. The next prime is 516906461. The reversal of 516906377 is 773609615.

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

It can be written as a sum of positive squares in 2 ways, for example, as 160300921 + 356605456 = 12661^2 + 18884^2 .

It is a cyclic number.

It is not a de Polignac number, because 516906377 - 2² = 516906373 is a prime.

It is a super-2 number, since 2×516906377² = 534384405166532258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (516906373) 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, 19881002 + ... + 19881027.

It is an arithmetic number, because the mean of its divisors is an integer number (139167105).

Almost surely, 2^516906377 is an apocalyptic number.

It is an amenable number.

516906377 is a deficient number, since it is larger than the sum of its proper divisors (39762043).

516906377 is a wasteful number, since it uses less digits than its factorization.

516906377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39762042.

The product of its (nonzero) digits is 238140, while the sum is 44.

The square root of 516906377 is about 22735.5751411747. The cubic root of 516906377 is about 802.5472852512.

The spelling of 516906377 in words is "five hundred sixteen million, nine hundred six thousand, three hundred seventy-seven".