144522874 has 4 divisors (see below), whose sum is σ = 216784314. Its totient is φ = 72261436.

The previous prime is 144522857. The next prime is 144522877. The reversal of 144522874 is 478225441.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 136072225 + 8450649 = 11665^2 + 2907^2 .

It is a super-2 number, since 2×144522874² = 41773722218439752, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (144522877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36130717 + ... + 36130720.

Almost surely, 2^144522874 is an apocalyptic number.

144522874 is a deficient number, since it is larger than the sum of its proper divisors (72261440).

144522874 is an equidigital number, since it uses as much as digits as its factorization.

144522874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72261439.

The product of its digits is 71680, while the sum is 37.

The square root of 144522874 is about 12021.7666754932. The cubic root of 144522874 is about 524.7819187958.

The spelling of 144522874 in words is "one hundred forty-four million, five hundred twenty-two thousand, eight hundred seventy-four".