511103997 has 12 divisors (see below), whose sum is σ = 781688700. Its totient is φ = 320692608.

The previous prime is 511103993. The next prime is 511104019. The reversal of 511103997 is 799301115.

It can be written as a sum of positive squares in 2 ways, for example, as 371178756 + 139925241 = 19266^2 + 11829^2 .

It is not a de Polignac number, because 511103997 - 2² = 511103993 is a prime.

It is a super-2 number, since 2×511103997² = 522454591498752018, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511103993) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1670122 + ... + 1670427.

It is an arithmetic number, because the mean of its divisors is an integer number (65140725).

Almost surely, 2^511103997 is an apocalyptic number.

It is an amenable number.

511103997 is a deficient number, since it is larger than the sum of its proper divisors (270584703).

511103997 is a wasteful number, since it uses less digits than its factorization.

511103997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3340572 (or 3340569 counting only the distinct ones).

The product of its (nonzero) digits is 8505, while the sum is 36.

The square root of 511103997 is about 22607.6092721013. The cubic root of 511103997 is about 799.5330592818.

The spelling of 511103997 in words is "five hundred eleven million, one hundred three thousand, nine hundred ninety-seven".