144955553 has 2 divisors, whose sum is σ = 144955554. Its totient is φ = 144955552.

The previous prime is 144955519. The next prime is 144955571. The reversal of 144955553 is 355559441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 138133009 + 6822544 = 11753^2 + 2612^2 .

It is an emirp because it is prime and its reverse (355559441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 144955553 - 2²² = 140761249 is a prime.

It is a super-2 number, since 2×144955553² = 42024224691071618, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 144955553.

It is not a weakly prime, because it can be changed into another prime (144955513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72477776 + 72477777.

It is an arithmetic number, because the mean of its divisors is an integer number (72477777).

Almost surely, 2^144955553 is an apocalyptic number.

It is an amenable number.

144955553 is a deficient number, since it is larger than the sum of its proper divisors (1).

144955553 is an equidigital number, since it uses as much as digits as its factorization.

144955553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 270000, while the sum is 41.

The square root of 144955553 is about 12039.7488761186. The cubic root of 144955553 is about 525.3051021727.

The spelling of 144955553 in words is "one hundred forty-four million, nine hundred fifty-five thousand, five hundred fifty-three".