151580861 has 2 divisors, whose sum is σ = 151580862. Its totient is φ = 151580860.

The previous prime is 151580851. The next prime is 151580893. The reversal of 151580861 is 168085151.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 148376761 + 3204100 = 12181^2 + 1790^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-151580861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (151580851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75790430 + 75790431.

It is an arithmetic number, because the mean of its divisors is an integer number (75790431).

Almost surely, 2^151580861 is an apocalyptic number.

It is an amenable number.

151580861 is a deficient number, since it is larger than the sum of its proper divisors (1).

151580861 is an equidigital number, since it uses as much as digits as its factorization.

151580861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9600, while the sum is 35.

The square root of 151580861 is about 12311.8179404993. The cubic root of 151580861 is about 533.1893381660.

The spelling of 151580861 in words is "one hundred fifty-one million, five hundred eighty thousand, eight hundred sixty-one".