144057557 has 4 divisors (see below), whose sum is σ = 164637216. Its totient is φ = 123477900.

The previous prime is 144057553. The next prime is 144057581. The reversal of 144057557 is 755750441.

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 not a de Polignac number, because 144057557 - 2² = 144057553 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 144057557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144057553) 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, 10289819 + ... + 10289832.

It is an arithmetic number, because the mean of its divisors is an integer number (41159304).

Almost surely, 2^144057557 is an apocalyptic number.

It is an amenable number.

144057557 is a deficient number, since it is larger than the sum of its proper divisors (20579659).

144057557 is an equidigital number, since it uses as much as digits as its factorization.

144057557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20579658.

The product of its (nonzero) digits is 98000, while the sum is 38.

The square root of 144057557 is about 12002.3979687394. The cubic root of 144057557 is about 524.2181038046.

The spelling of 144057557 in words is "one hundred forty-four million, fifty-seven thousand, five hundred fifty-seven".