23401457 has 2 divisors, whose sum is σ = 23401458. Its totient is φ = 23401456.

The previous prime is 23401453. The next prime is 23401471. The reversal of 23401457 is 75410432.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15358561 + 8042896 = 3919^2 + 2836^2 .

It is a cyclic number.

It is not a de Polignac number, because 23401457 - 2² = 23401453 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23401451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11700728 + 11700729.

It is an arithmetic number, because the mean of its divisors is an integer number (11700729).

Almost surely, 2^23401457 is an apocalyptic number.

It is an amenable number.

23401457 is a deficient number, since it is larger than the sum of its proper divisors (1).

23401457 is an equidigital number, since it uses as much as digits as its factorization.

23401457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 23401457 is about 4837.5052454752. The cubic root of 23401457 is about 286.0317869376.

Adding to 23401457 its reverse (75410432), we get a palindrome (98811889).

The spelling of 23401457 in words is "twenty-three million, four hundred one thousand, four hundred fifty-seven".