144581953 has 4 divisors (see below), whose sum is σ = 147944368. Its totient is φ = 141219540.

The previous prime is 144581939. The next prime is 144581971. The reversal of 144581953 is 359185441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 144581953 - 2⁹ = 144581441 is a prime.

It is a super-2 number, since 2×144581953² = 41807882266588418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144581053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1681143 + ... + 1681228.

It is an arithmetic number, because the mean of its divisors is an integer number (36986092).

Almost surely, 2^144581953 is an apocalyptic number.

It is an amenable number.

144581953 is a deficient number, since it is larger than the sum of its proper divisors (3362415).

144581953 is an equidigital number, since it uses as much as digits as its factorization.

144581953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3362414.

The product of its digits is 86400, while the sum is 40.

The square root of 144581953 is about 12024.2235923988. The cubic root of 144581953 is about 524.8534169757.

The spelling of 144581953 in words is "one hundred forty-four million, five hundred eighty-one thousand, nine hundred fifty-three".