151520561 has 2 divisors, whose sum is σ = 151520562. Its totient is φ = 151520560.

The previous prime is 151520533. The next prime is 151520569. The reversal of 151520561 is 165025151.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 150209536 + 1311025 = 12256^2 + 1145^2 .

It is a cyclic number.

It is not a de Polignac number, because 151520561 - 2²⁶ = 84411697 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 151520561.

It is not a weakly prime, because it can be changed into another prime (151520569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75760280 + 75760281.

It is an arithmetic number, because the mean of its divisors is an integer number (75760281).

Almost surely, 2^151520561 is an apocalyptic number.

It is an amenable number.

151520561 is a deficient number, since it is larger than the sum of its proper divisors (1).

151520561 is an equidigital number, since it uses as much as digits as its factorization.

151520561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1500, while the sum is 26.

The square root of 151520561 is about 12309.3688302853. The cubic root of 151520561 is about 533.1186265534.

The spelling of 151520561 in words is "one hundred fifty-one million, five hundred twenty thousand, five hundred sixty-one".