13199551 has 2 divisors, whose sum is σ = 13199552. Its totient is φ = 13199550.

The previous prime is 13199507. The next prime is 13199609. The reversal of 13199551 is 15599131.

It is a weak prime.

It is an emirp because it is prime and its reverse (15599131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13199551 - 2⁷ = 13199423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13199051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6599775 + 6599776.

It is an arithmetic number, because the mean of its divisors is an integer number (6599776).

Almost surely, 2^13199551 is an apocalyptic number.

13199551 is a deficient number, since it is larger than the sum of its proper divisors (1).

13199551 is an equidigital number, since it uses as much as digits as its factorization.

13199551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6075, while the sum is 34.

The square root of 13199551 is about 3633.1186328002. The cubic root of 13199551 is about 236.3304704271.

The spelling of 13199551 in words is "thirteen million, one hundred ninety-nine thousand, five hundred fifty-one".