23949553 has 2 divisors, whose sum is σ = 23949554. Its totient is φ = 23949552.

The previous prime is 23949547. The next prime is 23949599. The reversal of 23949553 is 35594932.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20684304 + 3265249 = 4548^2 + 1807^2 .

It is a cyclic number.

It is not a de Polignac number, because 23949553 - 2¹³ = 23941361 is a prime.

It is not a weakly prime, because it can be changed into another prime (23949503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11974776 + 11974777.

It is an arithmetic number, because the mean of its divisors is an integer number (11974777).

Almost surely, 2^23949553 is an apocalyptic number.

It is an amenable number.

23949553 is a deficient number, since it is larger than the sum of its proper divisors (1).

23949553 is an equidigital number, since it uses as much as digits as its factorization.

23949553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145800, while the sum is 40.

The square root of 23949553 is about 4893.8280517403. The cubic root of 23949553 is about 288.2476690582.

The spelling of 23949553 in words is "twenty-three million, nine hundred forty-nine thousand, five hundred fifty-three".