512311801 has 8 divisors (see below), whose sum is σ = 539674400. Its totient is φ = 484989120.

The previous prime is 512311757. The next prime is 512311819. The reversal of 512311801 is 108113215.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a 9-Lehmer number, since φ(512311801) divides (512311801-1)⁹.

It is a cyclic number.

It is not a de Polignac number, because 512311801 - 2¹³ = 512303609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (512311831) 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, 18481 + ... + 36961.

It is an arithmetic number, because the mean of its divisors is an integer number (67459300).

Almost surely, 2^512311801 is an apocalyptic number.

512311801 is the 18481-st pentagonal number.

It is an amenable number.

512311801 is a deficient number, since it is larger than the sum of its proper divisors (27362599).

512311801 is a wasteful number, since it uses less digits than its factorization.

512311801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19959.

The product of its (nonzero) digits is 240, while the sum is 22.

The square root of 512311801 is about 22634.3058431223. The cubic root of 512311801 is about 800.1623633996.

The spelling of 512311801 in words is "five hundred twelve million, three hundred eleven thousand, eight hundred one".