144987057 has 32 divisors (see below), whose sum is σ = 223080960. Its totient is φ = 93000960.

The previous prime is 144987049. The next prime is 144987071. The reversal of 144987057 is 750789441.

It is a happy number.

It is not a de Polignac number, because 144987057 - 2³ = 144987049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (144987077) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 76473 + ... + 78345.

It is an arithmetic number, because the mean of its divisors is an integer number (6971280).

Almost surely, 2^144987057 is an apocalyptic number.

It is an amenable number.

144987057 is a deficient number, since it is larger than the sum of its proper divisors (78093903).

144987057 is a wasteful number, since it uses less digits than its factorization.

144987057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1990 (or 1984 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The square root of 144987057 is about 12041.0571379759. The cubic root of 144987057 is about 525.3431552467.

The spelling of 144987057 in words is "one hundred forty-four million, nine hundred eighty-seven thousand, fifty-seven".