113571649 has 3 divisors (see below), whose sum is σ = 113582307. Its totient is φ = 113560992.

The previous prime is 113571617. The next prime is 113571673. The reversal of 113571649 is 946175311.

It is a happy number.

The square root of 113571649 is 10657.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 6076225 + 107495424 = 2465^2 + 10368^2 .

It is not a de Polignac number, because 113571649 - 2⁵ = 113571617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113571049) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 5329 + ... + 15985.

It is an arithmetic number, because the mean of its divisors is an integer number (37860769).

Almost surely, 2^113571649 is an apocalyptic number.

113571649 is the 10657-th square number.

113571649 is the 5329-th centered octagonal number.

It is an amenable number.

113571649 is a deficient number, since it is larger than the sum of its proper divisors (10658).

113571649 is an frugal number, since it uses more digits than its factorization.

113571649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21314 (or 10657 counting only the distinct ones).

The product of its digits is 22680, while the sum is 37.

The cubic root of 113571649 is about 484.2726888676.

The spelling of 113571649 in words is "one hundred thirteen million, five hundred seventy-one thousand, six hundred forty-nine".