511013641 has 8 divisors (see below), whose sum is σ = 532723968. Its totient is φ = 489630000.

The previous prime is 511013621. The next prime is 511013663. The reversal of 511013641 is 146310115.

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 511013641 - 2²³ = 502625033 is a prime.

It is a super-2 number, since 2×511013641² = 522269882576153762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (511013621) 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, 78475 + ... + 84736.

It is an arithmetic number, because the mean of its divisors is an integer number (66590496).

Almost surely, 2^511013641 is an apocalyptic number.

It is an amenable number.

511013641 is a deficient number, since it is larger than the sum of its proper divisors (21710327).

511013641 is a wasteful number, since it uses less digits than its factorization.

511013641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163343.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 511013641 is about 22605.6108300572. The cubic root of 511013641 is about 799.4859411042.

Adding to 511013641 its reverse (146310115), we get a palindrome (657323756).

The spelling of 511013641 in words is "five hundred eleven million, thirteen thousand, six hundred forty-one".