23150521 has 4 divisors (see below), whose sum is σ = 23897344. Its totient is φ = 22403700.

The previous prime is 23150509. The next prime is 23150539. The reversal of 23150521 is 12505132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 23150521 - 2⁹ = 23150009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23150551) 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, 373365 + ... + 373426.

It is an arithmetic number, because the mean of its divisors is an integer number (5974336).

Almost surely, 2^23150521 is an apocalyptic number.

It is an amenable number.

23150521 is a deficient number, since it is larger than the sum of its proper divisors (746823).

23150521 is an equidigital number, since it uses as much as digits as its factorization.

23150521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746822.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 23150521 is about 4811.4988309258. The cubic root of 23150521 is about 285.0057288271.

Adding to 23150521 its reverse (12505132), we get a palindrome (35655653).

It can be divided in two parts, 23 and 150521, that added together give a square (150544 = 388²).

The spelling of 23150521 in words is "twenty-three million, one hundred fifty thousand, five hundred twenty-one".