516403855 has 8 divisors (see below), whose sum is σ = 676019664. Its totient is φ = 375566400.

The previous prime is 516403837. The next prime is 516403861. The reversal of 516403855 is 558304615.

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

It is not a de Polignac number, because 516403855 - 2⁹ = 516403343 is a prime.

It is a super-2 number, since 2×516403855² = 533345882917722050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4694526 + ... + 4694635.

It is an arithmetic number, because the mean of its divisors is an integer number (84502458).

Almost surely, 2^516403855 is an apocalyptic number.

516403855 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

516403855 is a deficient number, since it is larger than the sum of its proper divisors (159615809).

516403855 is a wasteful number, since it uses less digits than its factorization.

516403855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9389177.

The product of its (nonzero) digits is 72000, while the sum is 37.

The square root of 516403855 is about 22724.5210070532. The cubic root of 516403855 is about 802.2871295460.

The spelling of 516403855 in words is "five hundred sixteen million, four hundred three thousand, eight hundred fifty-five".