15123001 has 4 divisors (see below), whose sum is σ = 15183504. Its totient is φ = 15062500.

The previous prime is 15122999. The next prime is 15123011. The reversal of 15123001 is 10032151.

15123001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a cyclic number.

It is not a de Polignac number, because 15123001 - 2¹ = 15122999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15123011) 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, 29875 + ... + 30376.

It is an arithmetic number, because the mean of its divisors is an integer number (3795876).

Almost surely, 2^15123001 is an apocalyptic number.

It is an amenable number.

15123001 is a deficient number, since it is larger than the sum of its proper divisors (60503).

15123001 is an equidigital number, since it uses as much as digits as its factorization.

15123001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60502.

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 15123001 is about 3888.8302868600. The cubic root of 15123001 is about 247.2934766645.

Adding to 15123001 its reverse (10032151), we get a palindrome (25155152).

The spelling of 15123001 in words is "fifteen million, one hundred twenty-three thousand, one".