144564554 has 4 divisors (see below), whose sum is σ = 216846834. Its totient is φ = 72282276.

The previous prime is 144564551. The next prime is 144564557. The reversal of 144564554 is 455465441.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (144564551) and next prime (144564557).

It can be written as a sum of positive squares in only one way, i.e., 101465329 + 43099225 = 10073^2 + 6565^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (144564551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36141137 + ... + 36141140.

Almost surely, 2^144564554 is an apocalyptic number.

144564554 is a deficient number, since it is larger than the sum of its proper divisors (72282280).

144564554 is an equidigital number, since it uses as much as digits as its factorization.

144564554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72282279.

The product of its digits is 192000, while the sum is 38.

The square root of 144564554 is about 12023.5000727742. The cubic root of 144564554 is about 524.8323625016.

The spelling of 144564554 in words is "one hundred forty-four million, five hundred sixty-four thousand, five hundred fifty-four".