520422051511 has 8 divisors (see below), whose sum is σ = 521527466304. Its totient is φ = 519317809920.

The previous prime is 520422051469. The next prime is 520422051559. The reversal of 520422051511 is 115150224025.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520422051511 is a prime.

It is a super-2 number, since 2×520422051511² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 520422051511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520422051571) 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, 597691 + ... + 1182403.

It is an arithmetic number, because the mean of its divisors is an integer number (65190933288).

Almost surely, 2^520422051511 is an apocalyptic number.

520422051511 is a deficient number, since it is larger than the sum of its proper divisors (1105414793).

520422051511 is an equidigital number, since it uses as much as digits as its factorization.

520422051511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586601.

The product of its (nonzero) digits is 4000, while the sum is 28.

Adding to 520422051511 its reverse (115150224025), we get a palindrome (635572275536).

The spelling of 520422051511 in words is "five hundred twenty billion, four hundred twenty-two million, fifty-one thousand, five hundred eleven".