23155337 has 2 divisors, whose sum is σ = 23155338. Its totient is φ = 23155336.

The previous prime is 23155333. The next prime is 23155367. The reversal of 23155337 is 73355132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21724921 + 1430416 = 4661^2 + 1196^2 .

It is a cyclic number.

It is not a de Polignac number, because 23155337 - 2² = 23155333 is a prime.

It is a Chen prime.

It is equal to p_1457390 and since 23155337 and 1457390 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (23155331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11577668 + 11577669.

It is an arithmetic number, because the mean of its divisors is an integer number (11577669).

Almost surely, 2^23155337 is an apocalyptic number.

It is an amenable number.

23155337 is a deficient number, since it is larger than the sum of its proper divisors (1).

23155337 is an equidigital number, since it uses as much as digits as its factorization.

23155337 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9450, while the sum is 29.

The square root of 23155337 is about 4811.9992726516. Note that the first 3 decimals coincide. The cubic root of 23155337 is about 285.0254906922.

The spelling of 23155337 in words is "twenty-three million, one hundred fifty-five thousand, three hundred thirty-seven".