15061993 has 2 divisors, whose sum is σ = 15061994. Its totient is φ = 15061992.

The previous prime is 15061979. The next prime is 15062009. The reversal of 15061993 is 39916051.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11478544 + 3583449 = 3388^2 + 1893^2 .

It is a cyclic number.

It is not a de Polignac number, because 15061993 - 2²¹ = 12964841 is a prime.

It is not a weakly prime, because it can be changed into another prime (15061973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7530996 + 7530997.

It is an arithmetic number, because the mean of its divisors is an integer number (7530997).

Almost surely, 2^15061993 is an apocalyptic number.

It is an amenable number.

15061993 is a deficient number, since it is larger than the sum of its proper divisors (1).

15061993 is an equidigital number, since it uses as much as digits as its factorization.

15061993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7290, while the sum is 34.

The square root of 15061993 is about 3880.9783560334. The cubic root of 15061993 is about 246.9604913123.

The spelling of 15061993 in words is "fifteen million, sixty-one thousand, nine hundred ninety-three".