1561134 has 8 divisors (see below), whose sum is σ = 3122280. Its totient is φ = 520376.

The previous prime is 1561123. The next prime is 1561139. The reversal of 1561134 is 4311651.

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

1561134 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 1561134.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1561139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130089 + ... + 130100.

It is an arithmetic number, because the mean of its divisors is an integer number (390285).

2^1561134 is an apocalyptic number.

1561134 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1561134 is a wasteful number, since it uses less digits than its factorization.

1561134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260194.

The product of its digits is 360, while the sum is 21.

The square root of 1561134 is about 1249.4534805266. The cubic root of 1561134 is about 116.0058954594.

Adding to 1561134 its reverse (4311651), we get a palindrome (5872785).

The spelling of 1561134 in words is "one million, five hundred sixty-one thousand, one hundred thirty-four".