144561490 has 16 divisors (see below), whose sum is σ = 266558040. Its totient is φ = 56414080.

The previous prime is 144561451. The next prime is 144561493. The reversal of 144561490 is 94165441.

It is a happy number.

144561490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 115369081 + 29192409 = 10741^2 + 5403^2 .

It is not an unprimeable number, because it can be changed into a prime (144561493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175885 + ... + 176704.

Almost surely, 2^144561490 is an apocalyptic number.

144561490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

144561490 is a deficient number, since it is larger than the sum of its proper divisors (121996550).

144561490 is a wasteful number, since it uses less digits than its factorization.

144561490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352637.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 144561490 is about 12023.3726549583. The cubic root of 144561490 is about 524.8286545901.

The spelling of 144561490 in words is "one hundred forty-four million, five hundred sixty-one thousand, four hundred ninety".