148371521 has 2 divisors, whose sum is σ = 148371522. Its totient is φ = 148371520.

The previous prime is 148371493. The next prime is 148371541. The reversal of 148371521 is 125173841.

148371521 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., 133633600 + 14737921 = 11560^2 + 3839^2 .

It is a cyclic number.

It is not a de Polignac number, because 148371521 - 2²² = 144177217 is a prime.

It is not a weakly prime, because it can be changed into another prime (148371541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74185760 + 74185761.

It is an arithmetic number, because the mean of its divisors is an integer number (74185761).

Almost surely, 2^148371521 is an apocalyptic number.

It is an amenable number.

148371521 is a deficient number, since it is larger than the sum of its proper divisors (1).

148371521 is an equidigital number, since it uses as much as digits as its factorization.

148371521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6720, while the sum is 32.

The square root of 148371521 is about 12180.7849090278. The cubic root of 148371521 is about 529.3994871694.

The spelling of 148371521 in words is "one hundred forty-eight million, three hundred seventy-one thousand, five hundred twenty-one".