146221461 has 6 divisors (see below), whose sum is σ = 211208790. Its totient is φ = 97480968.

The previous prime is 146221459. The next prime is 146221463. The reversal of 146221461 is 164122641.

146221461 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (146221459) and next prime (146221463).

It can be written as a sum of positive squares in only one way, i.e., 146168100 + 53361 = 12090^2 + 231^2 .

It is not a de Polignac number, because 146221461 - 2¹ = 146221459 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146221463) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8123406 + ... + 8123423.

It is an arithmetic number, because the mean of its divisors is an integer number (35201465).

Almost surely, 2^146221461 is an apocalyptic number.

It is an amenable number.

146221461 is a deficient number, since it is larger than the sum of its proper divisors (64987329).

146221461 is a wasteful number, since it uses less digits than its factorization.

146221461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16246835 (or 16246832 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 146221461 is about 12092.2066224490. The cubic root of 146221461 is about 526.8298488007.

The spelling of 146221461 in words is "one hundred forty-six million, two hundred twenty-one thousand, four hundred sixty-one".