144578457 has 6 divisors (see below), whose sum is σ = 208835562. Its totient is φ = 96385632.

The previous prime is 144578443. The next prime is 144578459. The reversal of 144578457 is 754875441.

144578457 is a `hidden beast` number, since 144 + 57 + 8 + 457 = 666.

144578457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 141633801 + 2944656 = 11901^2 + 1716^2 .

It is not a de Polignac number, because 144578457 - 2¹² = 144574361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (144578459) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8032128 + ... + 8032145.

It is an arithmetic number, because the mean of its divisors is an integer number (34805927).

Almost surely, 2^144578457 is an apocalyptic number.

It is an amenable number.

144578457 is a deficient number, since it is larger than the sum of its proper divisors (64257105).

144578457 is a wasteful number, since it uses less digits than its factorization.

144578457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16064279 (or 16064276 counting only the distinct ones).

The product of its digits is 627200, while the sum is 45.

The square root of 144578457 is about 12024.0782183085. The cubic root of 144578457 is about 524.8491866129.

The spelling of 144578457 in words is "one hundred forty-four million, five hundred seventy-eight thousand, four hundred fifty-seven".