15133661 has 2 divisors, whose sum is σ = 15133662. Its totient is φ = 15133660.

The previous prime is 15133637. The next prime is 15133663. The reversal of 15133661 is 16633151.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14485636 + 648025 = 3806^2 + 805^2 .

It is a cyclic number.

It is not a de Polignac number, because 15133661 - 2⁶ = 15133597 is a prime.

Together with 15133663, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15133661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15133663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7566830 + 7566831.

It is an arithmetic number, because the mean of its divisors is an integer number (7566831).

Almost surely, 2^15133661 is an apocalyptic number.

It is an amenable number.

15133661 is a deficient number, since it is larger than the sum of its proper divisors (1).

15133661 is an equidigital number, since it uses as much as digits as its factorization.

15133661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1620, while the sum is 26.

The square root of 15133661 is about 3890.2006374993. The cubic root of 15133661 is about 247.3515676326.

The spelling of 15133661 in words is "fifteen million, one hundred thirty-three thousand, six hundred sixty-one".