511117401 has 4 divisors (see below), whose sum is σ = 681489872. Its totient is φ = 340744932.

The previous prime is 511117381. The next prime is 511117447. The reversal of 511117401 is 104711115.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 511117401 - 2⁷ = 511117273 is a prime.

It is a super-2 number, since 2×511117401² = 522481995209989602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (511117471) 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, 85186231 + ... + 85186236.

It is an arithmetic number, because the mean of its divisors is an integer number (170372468).

Almost surely, 2^511117401 is an apocalyptic number.

It is an amenable number.

511117401 is a deficient number, since it is larger than the sum of its proper divisors (170372471).

511117401 is a wasteful number, since it uses less digits than its factorization.

511117401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170372470.

The product of its (nonzero) digits is 140, while the sum is 21.

The square root of 511117401 is about 22607.9057190178. The cubic root of 511117401 is about 799.5400486274.

Adding to 511117401 its reverse (104711115), we get a palindrome (615828516).

The spelling of 511117401 in words is "five hundred eleven million, one hundred seventeen thousand, four hundred one".