15745001 has 2 divisors, whose sum is σ = 15745002. Its totient is φ = 15745000.

The previous prime is 15744983. The next prime is 15745003. The reversal of 15745001 is 10054751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14055001 + 1690000 = 3749^2 + 1300^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15745001 is a prime.

Together with 15745003, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (15745003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7872500 + 7872501.

It is an arithmetic number, because the mean of its divisors is an integer number (7872501).

Almost surely, 2^15745001 is an apocalyptic number.

It is an amenable number.

15745001 is a deficient number, since it is larger than the sum of its proper divisors (1).

15745001 is an equidigital number, since it uses as much as digits as its factorization.

15745001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 700, while the sum is 23.

The square root of 15745001 is about 3967.9971018135. The cubic root of 15745001 is about 250.6383738611.

Adding to 15745001 its sum of digits (23), we get a square (15745024 = 3968²).

Adding to 15745001 its reverse (10054751), we get a palindrome (25799752).

The spelling of 15745001 in words is "fifteen million, seven hundred forty-five thousand, one".