511214993 has 4 divisors (see below), whose sum is σ = 511742448. Its totient is φ = 510687540.

The previous prime is 511214989. The next prime is 511215037. The reversal of 511214993 is 399412115.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 511214993 - 2² = 511214989 is a prime.

It is a super-2 number, since 2×511214993² = 522681538135980098, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (511214393) 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, 262271 + ... + 264212.

It is an arithmetic number, because the mean of its divisors is an integer number (127935612).

Almost surely, 2^511214993 is an apocalyptic number.

It is an amenable number.

511214993 is a deficient number, since it is larger than the sum of its proper divisors (527455).

511214993 is an equidigital number, since it uses as much as digits as its factorization.

511214993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527454.

The product of its digits is 9720, while the sum is 35.

The square root of 511214993 is about 22610.0639760263. The cubic root of 511214993 is about 799.5909330534.

The spelling of 511214993 in words is "five hundred eleven million, two hundred fourteen thousand, nine hundred ninety-three".