144057531 has 4 divisors (see below), whose sum is σ = 192076712. Its totient is φ = 96038352.

The previous prime is 144057523. The next prime is 144057553. The reversal of 144057531 is 135750441.

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

It is not a de Polignac number, because 144057531 - 2³ = 144057523 is a prime.

It is a super-2 number, since 2×144057531² = 41505144475631922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144057581) 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 in 3 ways as a sum of consecutive naturals, for example, 24009586 + ... + 24009591.

It is an arithmetic number, because the mean of its divisors is an integer number (48019178).

Almost surely, 2^144057531 is an apocalyptic number.

144057531 is a deficient number, since it is larger than the sum of its proper divisors (48019181).

144057531 is an equidigital number, since it uses as much as digits as its factorization.

144057531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48019180.

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 144057531 is about 12002.3968856225. The cubic root of 144057531 is about 524.2180722670.

The spelling of 144057531 in words is "one hundred forty-four million, fifty-seven thousand, five hundred thirty-one".