511105427 has 6 divisors (see below), whose sum is σ = 594551268. Its totient is φ = 438090324.

The previous prime is 511105423. The next prime is 511105429. The reversal of 511105427 is 724501115.

It is not a de Polignac number, because 511105427 - 2² = 511105423 is a prime.

It is a super-2 number, since 2×511105427² = 522457515017704658, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 511105396 and 511105405.

It is not an unprimeable number, because it can be changed into a prime (511105423) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5215313 + ... + 5215410.

It is an arithmetic number, because the mean of its divisors is an integer number (99091878).

Almost surely, 2^511105427 is an apocalyptic number.

511105427 is a deficient number, since it is larger than the sum of its proper divisors (83445841).

511105427 is a wasteful number, since it uses less digits than its factorization.

511105427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10430737 (or 10430730 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 26.

The square root of 511105427 is about 22607.6408985989. The cubic root of 511105427 is about 799.5338049430.

The spelling of 511105427 in words is "five hundred eleven million, one hundred five thousand, four hundred twenty-seven".