511161534 has 48 divisors (see below), whose sum is σ = 1194975600. Its totient is φ = 156981888.

The previous prime is 511161527. The next prime is 511161571. The reversal of 511161534 is 435161115.

511161534 is a `hidden beast` number, since 5 + 1 + 11 + 615 + 34 = 666.

It is a super-2 number, since 2×511161534² = 522572227682466312, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 511161498 and 511161507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 143082 + ... + 146610.

It is an arithmetic number, because the mean of its divisors is an integer number (24895325).

Almost surely, 2^511161534 is an apocalyptic number.

511161534 is an abundant number, since it is smaller than the sum of its proper divisors (683814066).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

511161534 is a wasteful number, since it uses less digits than its factorization.

511161534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4169 (or 4166 counting only the distinct ones).

The product of its digits is 1800, while the sum is 27.

The square root of 511161534 is about 22608.8817503210. The cubic root of 511161534 is about 799.5630603565.

It can be divided in two parts, 51116 and 1534, that added together give a triangular number (52650 = T₃₂₄).

The spelling of 511161534 in words is "five hundred eleven million, one hundred sixty-one thousand, five hundred thirty-four".