1551006161 has 2 divisors, whose sum is σ = 1551006162. Its totient is φ = 1551006160.

The previous prime is 1551006139. The next prime is 1551006187. The reversal of 1551006161 is 1616001551.

It is an a-pointer prime, because the next prime (1551006187) can be obtained adding 1551006161 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1541740225 + 9265936 = 39265^2 + 3044^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1551006161 is a prime.

It is a super-2 number, since 2×1551006161² = 4811240222919915842, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1551006161.

It is not a weakly prime, because it can be changed into another prime (1551006361) 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, 775503080 + 775503081.

It is an arithmetic number, because the mean of its divisors is an integer number (775503081).

Almost surely, 2^1551006161 is an apocalyptic number.

It is an amenable number.

1551006161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1551006161 is an equidigital number, since it uses as much as digits as its factorization.

1551006161 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1551006161 is about 39382.8155545030. The cubic root of 1551006161 is about 1157.5448869948.

The spelling of 1551006161 in words is "one billion, five hundred fifty-one million, six thousand, one hundred sixty-one".