516405023 has 8 divisors (see below), whose sum is σ = 531262368. Its totient is φ = 501737184.

The previous prime is 516404957. The next prime is 516405079. The reversal of 516405023 is 320504615.

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 516405023 - 2²² = 512210719 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 516404983 and 516405001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516401023) 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, 41840 + ... + 52757.

It is an arithmetic number, because the mean of its divisors is an integer number (66407796).

Almost surely, 2^516405023 is an apocalyptic number.

516405023 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

516405023 is a deficient number, since it is larger than the sum of its proper divisors (14857345).

516405023 is a wasteful number, since it uses less digits than its factorization.

516405023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94753.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 516405023 is about 22724.5467061502. The cubic root of 516405023 is about 802.2877344154.

Adding to 516405023 its reverse (320504615), we get a palindrome (836909638).

The spelling of 516405023 in words is "five hundred sixteen million, four hundred five thousand, twenty-three".