1123521534 has 48 divisors (see below), whose sum is σ = 2581450560. Its totient is φ = 351936000.

The previous prime is 1123521523. The next prime is 1123521541. The reversal of 1123521534 is 4351253211.

1123521534 is a `hidden beast` number, since 1 + 123 + 5 + 2 + 1 + 534 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1123521498 and 1123521507.

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, 227362 + ... + 232250.

It is an arithmetic number, because the mean of its divisors is an integer number (53780220).

Almost surely, 2^1123521534 is an apocalyptic number.

1123521534 is an abundant number, since it is smaller than the sum of its proper divisors (1457929026).

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

1123521534 is a wasteful number, since it uses less digits than its factorization.

1123521534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5665 (or 5662 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 1123521534 is about 33518.9727467892. The cubic root of 1123521534 is about 1039.5861068761.

Adding to 1123521534 its reverse (4351253211), we get a palindrome (5474774745).

The spelling of 1123521534 in words is "one billion, one hundred twenty-three million, five hundred twenty-one thousand, five hundred thirty-four".