150155521 has 2 divisors, whose sum is σ = 150155522. Its totient is φ = 150155520.

The previous prime is 150155513. The next prime is 150155573. The reversal of 150155521 is 125551051.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 147282496 + 2873025 = 12136^2 + 1695^2 .

It is an emirp because it is prime and its reverse (125551051) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 150155521 - 2³ = 150155513 is a prime.

It is not a weakly prime, because it can be changed into another prime (150155821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75077760 + 75077761.

It is an arithmetic number, because the mean of its divisors is an integer number (75077761).

Almost surely, 2^150155521 is an apocalyptic number.

It is an amenable number.

150155521 is a deficient number, since it is larger than the sum of its proper divisors (1).

150155521 is an equidigital number, since it uses as much as digits as its factorization.

150155521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1250, while the sum is 25.

The square root of 150155521 is about 12253.7961873046. The cubic root of 150155521 is about 531.5128497469.

The spelling of 150155521 in words is "one hundred fifty million, one hundred fifty-five thousand, five hundred twenty-one".