148385521 has 2 divisors, whose sum is σ = 148385522. Its totient is φ = 148385520.

The previous prime is 148385507. The next prime is 148385551. The reversal of 148385521 is 125583841.

148385521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130416400 + 17969121 = 11420^2 + 4239^2 .

It is a cyclic number.

It is not a de Polignac number, because 148385521 - 2⁹ = 148385009 is a prime.

It is not a weakly prime, because it can be changed into another prime (148385551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74192760 + 74192761.

It is an arithmetic number, because the mean of its divisors is an integer number (74192761).

Almost surely, 2^148385521 is an apocalyptic number.

It is an amenable number.

148385521 is a deficient number, since it is larger than the sum of its proper divisors (1).

148385521 is an equidigital number, since it uses as much as digits as its factorization.

148385521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38400, while the sum is 37.

The square root of 148385521 is about 12181.3595710824. The cubic root of 148385521 is about 529.4161376238.

The spelling of 148385521 in words is "one hundred forty-eight million, three hundred eighty-five thousand, five hundred twenty-one".