15253993 has 2 divisors, whose sum is σ = 15253994. Its totient is φ = 15253992.

The previous prime is 15253967. The next prime is 15254011. The reversal of 15253993 is 39935251.

15253993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14953689 + 300304 = 3867^2 + 548^2 .

It is an emirp because it is prime and its reverse (39935251) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15253993 - 2⁵ = 15253961 is a prime.

It is not a weakly prime, because it can be changed into another prime (15253943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7626996 + 7626997.

It is an arithmetic number, because the mean of its divisors is an integer number (7626997).

Almost surely, 2^15253993 is an apocalyptic number.

It is an amenable number.

15253993 is a deficient number, since it is larger than the sum of its proper divisors (1).

15253993 is an equidigital number, since it uses as much as digits as its factorization.

15253993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36450, while the sum is 37.

The square root of 15253993 is about 3905.6360557533. The cubic root of 15253993 is about 248.0054250027.

It can be divided in two parts, 152 and 53993, that added together give a palindrome (54145).

The spelling of 15253993 in words is "fifteen million, two hundred fifty-three thousand, nine hundred ninety-three".