113532661 has 4 divisors (see below), whose sum is σ = 123853824. Its totient is φ = 103211500.

The previous prime is 113532631. The next prime is 113532667. The reversal of 113532661 is 166235311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 166235311 = 11 ⋅15112301.

It is a cyclic number.

It is not a de Polignac number, because 113532661 - 2⁷ = 113532533 is a prime.

It is a super-2 number, since 2×113532661² = 25779330227481842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113532667) 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, 5160565 + ... + 5160586.

It is an arithmetic number, because the mean of its divisors is an integer number (30963456).

Almost surely, 2^113532661 is an apocalyptic number.

113532661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

113532661 is a deficient number, since it is larger than the sum of its proper divisors (10321163).

113532661 is a wasteful number, since it uses less digits than its factorization.

113532661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10321162.

The product of its digits is 3240, while the sum is 28.

The square root of 113532661 is about 10655.1706227540. The cubic root of 113532661 is about 484.2172672177.

Adding to 113532661 its reverse (166235311), we get a palindrome (279767972).

The spelling of 113532661 in words is "one hundred thirteen million, five hundred thirty-two thousand, six hundred sixty-one".