134554221 has 6 divisors (see below), whose sum is σ = 194356110. Its totient is φ = 89702808.

The previous prime is 134554213. The next prime is 134554243. The reversal of 134554221 is 122455431.

It can be written as a sum of positive squares in only one way, i.e., 126225225 + 8328996 = 11235^2 + 2886^2 .

It is not a de Polignac number, because 134554221 - 2³ = 134554213 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134554261) 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, 7475226 + ... + 7475243.

It is an arithmetic number, because the mean of its divisors is an integer number (32392685).

Almost surely, 2^134554221 is an apocalyptic number.

It is an amenable number.

134554221 is a deficient number, since it is larger than the sum of its proper divisors (59801889).

134554221 is a wasteful number, since it uses less digits than its factorization.

134554221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14950475 (or 14950472 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 134554221 is about 11599.7509024979. The cubic root of 134554221 is about 512.4275159040.

The spelling of 134554221 in words is "one hundred thirty-four million, five hundred fifty-four thousand, two hundred twenty-one".