15919061 has 2 divisors, whose sum is σ = 15919062. Its totient is φ = 15919060.

The previous prime is 15919049. The next prime is 15919063. The reversal of 15919061 is 16091951.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10278436 + 5640625 = 3206^2 + 2375^2 .

It is an emirp because it is prime and its reverse (16091951) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15919061 - 2¹⁸ = 15656917 is a prime.

Together with 15919063, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15919063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7959530 + 7959531.

It is an arithmetic number, because the mean of its divisors is an integer number (7959531).

Almost surely, 2^15919061 is an apocalyptic number.

It is an amenable number.

15919061 is a deficient number, since it is larger than the sum of its proper divisors (1).

15919061 is an equidigital number, since it uses as much as digits as its factorization.

15919061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2430, while the sum is 32.

The square root of 15919061 is about 3989.8697973743. The cubic root of 15919061 is about 251.5585883501.

The spelling of 15919061 in words is "fifteen million, nine hundred nineteen thousand, sixty-one".