151219561 has 2 divisors, whose sum is σ = 151219562. Its totient is φ = 151219560.

The previous prime is 151219559. The next prime is 151219577. The reversal of 151219561 is 165912151.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150209536 + 1010025 = 12256^2 + 1005^2 .

It is a cyclic number.

It is not a de Polignac number, because 151219561 - 2¹ = 151219559 is a prime.

Together with 151219559, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (151219511) 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, 75609780 + 75609781.

It is an arithmetic number, because the mean of its divisors is an integer number (75609781).

Almost surely, 2^151219561 is an apocalyptic number.

It is an amenable number.

151219561 is a deficient number, since it is larger than the sum of its proper divisors (1).

151219561 is an equidigital number, since it uses as much as digits as its factorization.

151219561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2700, while the sum is 31.

The square root of 151219561 is about 12297.1362926496. The cubic root of 151219561 is about 532.7653739837.

The spelling of 151219561 in words is "one hundred fifty-one million, two hundred nineteen thousand, five hundred sixty-one".