144801657 has 48 divisors (see below), whose sum is σ = 280844928. Its totient is φ = 69431040.

The previous prime is 144801653. The next prime is 144801667. The reversal of 144801657 is 756108441.

It is a happy number.

144801657 is a `hidden beast` number, since 14 + 480 + 165 + 7 = 666.

It is not a de Polignac number, because 144801657 - 2² = 144801653 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (144801653) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 973 + ... + 17045.

It is an arithmetic number, because the mean of its divisors is an integer number (5850936).

Almost surely, 2^144801657 is an apocalyptic number.

It is an amenable number.

144801657 is a deficient number, since it is larger than the sum of its proper divisors (136043271).

144801657 is a wasteful number, since it uses less digits than its factorization.

144801657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16110 (or 16107 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 144801657 is about 12033.3560156758. The cubic root of 144801657 is about 525.1191348682.

The spelling of 144801657 in words is "one hundred forty-four million, eight hundred one thousand, six hundred fifty-seven".