23571953 has 4 divisors (see below), whose sum is σ = 23581668. Its totient is φ = 23562240.

The previous prime is 23571937. The next prime is 23571959. The reversal of 23571953 is 35917532.

It is a happy 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 2 ways, for example, as 10445824 + 13126129 = 3232^2 + 3623^2 .

It is a cyclic number.

It is not a de Polignac number, because 23571953 - 2⁴ = 23571937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23571959) 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, 2225 + ... + 7217.

It is an arithmetic number, because the mean of its divisors is an integer number (5895417).

Almost surely, 2^23571953 is an apocalyptic number.

It is an amenable number.

23571953 is a deficient number, since it is larger than the sum of its proper divisors (9715).

23571953 is an equidigital number, since it uses as much as digits as its factorization.

23571953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9714.

The product of its digits is 28350, while the sum is 35.

The square root of 23571953 is about 4855.0955706350. The cubic root of 23571953 is about 286.7247540183.

The spelling of 23571953 in words is "twenty-three million, five hundred seventy-one thousand, nine hundred fifty-three".