148299521 has 2 divisors, whose sum is σ = 148299522. Its totient is φ = 148299520.

The previous prime is 148299499. The next prime is 148299527. The reversal of 148299521 is 125992841.

148299521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 147889921 + 409600 = 12161^2 + 640^2 .

It is a cyclic number.

It is not a de Polignac number, because 148299521 - 2⁶ = 148299457 is a prime.

It is not a weakly prime, because it can be changed into another prime (148299527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74149760 + 74149761.

It is an arithmetic number, because the mean of its divisors is an integer number (74149761).

Almost surely, 2^148299521 is an apocalyptic number.

It is an amenable number.

148299521 is a deficient number, since it is larger than the sum of its proper divisors (1).

148299521 is an equidigital number, since it uses as much as digits as its factorization.

148299521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 41.

The square root of 148299521 is about 12177.8290758246. The cubic root of 148299521 is about 529.3138397125.

The spelling of 148299521 in words is "one hundred forty-eight million, two hundred ninety-nine thousand, five hundred twenty-one".