516401122 has 4 divisors (see below), whose sum is σ = 774601686. Its totient is φ = 258200560.

The previous prime is 516401111. The next prime is 516401141. The reversal of 516401122 is 221104615.

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

It can be written as a sum of positive squares in only one way, i.e., 486687721 + 29713401 = 22061^2 + 5451^2 .

It is a junction number, because it is equal to n+sod(n) for n = 516401093 and 516401102.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129100279 + ... + 129100282.

Almost surely, 2^516401122 is an apocalyptic number.

516401122 is a deficient number, since it is larger than the sum of its proper divisors (258200564).

516401122 is a wasteful number, since it uses less digits than its factorization.

516401122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258200563.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 516401122 is about 22724.4608736929. The cubic root of 516401122 is about 802.2857142102.

Adding to 516401122 its reverse (221104615), we get a palindrome (737505737).

The spelling of 516401122 in words is "five hundred sixteen million, four hundred one thousand, one hundred twenty-two".