144557137 has 4 divisors (see below), whose sum is σ = 153060516. Its totient is φ = 136053760.

The previous prime is 144557089. The next prime is 144557197. The reversal of 144557137 is 731755441.

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

It can be written as a sum of positive squares in 2 ways, for example, as 118178641 + 26378496 = 10871^2 + 5136^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144557137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 144557096 and 144557105.

It is not an unprimeable number, because it can be changed into a prime (144557197) 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, 4251664 + ... + 4251697.

It is an arithmetic number, because the mean of its divisors is an integer number (38265129).

Almost surely, 2^144557137 is an apocalyptic number.

144557137 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

144557137 is a deficient number, since it is larger than the sum of its proper divisors (8503379).

144557137 is an equidigital number, since it uses as much as digits as its factorization.

144557137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8503378.

The product of its digits is 58800, while the sum is 37.

The square root of 144557137 is about 12023.1916311768. The cubic root of 144557137 is about 524.8233867002.

The spelling of 144557137 in words is "one hundred forty-four million, five hundred fifty-seven thousand, one hundred thirty-seven".