15651161 has 2 divisors, whose sum is σ = 15651162. Its totient is φ = 15651160.

The previous prime is 15651157. The next prime is 15651179. The reversal of 15651161 is 16115651.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15649936 + 1225 = 3956^2 + 35^2 .

It is a cyclic number.

It is not a de Polignac number, because 15651161 - 2² = 15651157 is a prime.

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 15651161.

It is not a weakly prime, because it can be changed into another prime (15651131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7825580 + 7825581.

It is an arithmetic number, because the mean of its divisors is an integer number (7825581).

Almost surely, 2^15651161 is an apocalyptic number.

It is an amenable number.

15651161 is a deficient number, since it is larger than the sum of its proper divisors (1).

15651161 is an equidigital number, since it uses as much as digits as its factorization.

15651161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 900, while the sum is 26.

The square root of 15651161 is about 3956.1548250795. The cubic root of 15651161 is about 250.1394475364.

The spelling of 15651161 in words is "fifteen million, six hundred fifty-one thousand, one hundred sixty-one".