148461221 has 8 divisors (see below), whose sum is σ = 157702104. Its totient is φ = 139276800.

The previous prime is 148461217. The next prime is 148461227. The reversal of 148461221 is 122164841.

148461221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 25140196 + 123321025 = 5014^2 + 11105^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 148461221 - 2² = 148461217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148461227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8630 + ... + 19271.

It is an arithmetic number, because the mean of its divisors is an integer number (19712763).

Almost surely, 2^148461221 is an apocalyptic number.

It is an amenable number.

148461221 is a deficient number, since it is larger than the sum of its proper divisors (9240883).

148461221 is a wasteful number, since it uses less digits than its factorization.

148461221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28231.

The product of its digits is 3072, while the sum is 29.

The square root of 148461221 is about 12184.4663814219. The cubic root of 148461221 is about 529.5061508724.

The spelling of 148461221 in words is "one hundred forty-eight million, four hundred sixty-one thousand, two hundred twenty-one".