23051505 has 16 divisors (see below), whose sum is σ = 36976320. Its totient is φ = 12262848.

The previous prime is 23051459. The next prime is 23051513. The reversal of 23051505 is 50515032.

It is not a de Polignac number, because 23051505 - 2⁷ = 23051377 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4911 + ... + 8379.

It is an arithmetic number, because the mean of its divisors is an integer number (2311020).

Almost surely, 2^23051505 is an apocalyptic number.

It is an amenable number.

23051505 is a deficient number, since it is larger than the sum of its proper divisors (13924815).

23051505 is a wasteful number, since it uses less digits than its factorization.

23051505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3920.

The product of its (nonzero) digits is 750, while the sum is 21.

The square root of 23051505 is about 4801.1982879277. The cubic root of 23051505 is about 284.5988199702.

Adding to 23051505 its reverse (50515032), we get a palindrome (73566537).

The spelling of 23051505 in words is "twenty-three million, fifty-one thousand, five hundred five".