144955556 has 6 divisors (see below), whose sum is σ = 253672230. Its totient is φ = 72477776.

The previous prime is 144955553. The next prime is 144955571. The reversal of 144955556 is 655559441.

It can be written as a sum of positive squares in only one way, i.e., 107329600 + 37625956 = 10360^2 + 6134^2 .

It is a super-2 number, since 2×144955556² = 42024226430538272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (144955553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18119441 + ... + 18119448.

It is an arithmetic number, because the mean of its divisors is an integer number (42278705).

Almost surely, 2^144955556 is an apocalyptic number.

It is an amenable number.

144955556 is a deficient number, since it is larger than the sum of its proper divisors (108716674).

144955556 is a wasteful number, since it uses less digits than its factorization.

144955556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36238893 (or 36238891 counting only the distinct ones).

The product of its digits is 540000, while the sum is 44.

The square root of 144955556 is about 12039.7490007060. The cubic root of 144955556 is about 525.3051057966.

The spelling of 144955556 in words is "one hundred forty-four million, nine hundred fifty-five thousand, five hundred fifty-six".