144521722 has 8 divisors (see below), whose sum is σ = 217298772. Its totient is φ = 72088800.

The previous prime is 144521717. The next prime is 144521737. The reversal of 144521722 is 227125441.

It can be written as a sum of positive squares in 2 ways, for example, as 116229961 + 28291761 = 10781^2 + 5319^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84979 + ... + 86662.

Almost surely, 2^144521722 is an apocalyptic number.

144521722 is a deficient number, since it is larger than the sum of its proper divisors (72777050).

144521722 is a wasteful number, since it uses less digits than its factorization.

144521722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172064.

The product of its digits is 4480, while the sum is 28.

The square root of 144521722 is about 12021.7187623068. The cubic root of 144521722 is about 524.7805244367.

The spelling of 144521722 in words is "one hundred forty-four million, five hundred twenty-one thousand, seven hundred twenty-two".