511026997 has 8 divisors (see below), whose sum is σ = 551547416. Its totient is φ = 470679552.

The previous prime is 511026979. The next prime is 511027001. The reversal of 511026997 is 799620115.

It can be written as a sum of positive squares in 4 ways, for example, as 119224561 + 391802436 = 10919^2 + 19794^2 .

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 511026997 - 2²⁷ = 376809269 is a prime.

It is a super-2 number, since 2×511026997² = 522297183325676018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511026947) 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, 37068 + ... + 48949.

It is an arithmetic number, because the mean of its divisors is an integer number (68943427).

Almost surely, 2^511026997 is an apocalyptic number.

It is an amenable number.

511026997 is a deficient number, since it is larger than the sum of its proper divisors (40520419).

511026997 is a wasteful number, since it uses less digits than its factorization.

511026997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86487.

The product of its (nonzero) digits is 34020, while the sum is 40.

The square root of 511026997 is about 22605.9062415113. The cubic root of 511026997 is about 799.4929062420.

The spelling of 511026997 in words is "five hundred eleven million, twenty-six thousand, nine hundred ninety-seven".