1013533561 has 8 divisors (see below), whose sum is σ = 1049960448. Its totient is φ = 977340000.

The previous prime is 1013533559. The next prime is 1013533567. The reversal of 1013533561 is 1653353101.

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

It is a cyclic number.

It is not a de Polignac number, because 1013533561 - 2¹ = 1013533559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1013533567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49465 + ... + 66886.

It is an arithmetic number, because the mean of its divisors is an integer number (131245056).

Almost surely, 2^1013533561 is an apocalyptic number.

It is an amenable number.

1013533561 is a deficient number, since it is larger than the sum of its proper divisors (36426887).

1013533561 is a wasteful number, since it uses less digits than its factorization.

1013533561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116663.

The product of its (nonzero) digits is 4050, while the sum is 28.

The square root of 1013533561 is about 31836.0418551050. The cubic root of 1013533561 is about 1004.4909878354.

Adding to 1013533561 its reverse (1653353101), we get a palindrome (2666886662).

The spelling of 1013533561 in words is "one billion, thirteen million, five hundred thirty-three thousand, five hundred sixty-one".