144562987 has 4 divisors (see below), whose sum is σ = 144597816. Its totient is φ = 144528160.

The previous prime is 144562949. The next prime is 144562991. The reversal of 144562987 is 789265441.

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

It is a cyclic number.

It is not a de Polignac number, because 144562987 - 2¹¹ = 144560939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144562997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10189 + ... + 19822.

It is an arithmetic number, because the mean of its divisors is an integer number (36149454).

Almost surely, 2^144562987 is an apocalyptic number.

144562987 is a deficient number, since it is larger than the sum of its proper divisors (34829).

144562987 is an equidigital number, since it uses as much as digits as its factorization.

144562987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34828.

The product of its digits is 483840, while the sum is 46.

The square root of 144562987 is about 12023.4349085442. The cubic root of 144562987 is about 524.8304661970.

The spelling of 144562987 in words is "one hundred forty-four million, five hundred sixty-two thousand, nine hundred eighty-seven".