201457 has 8 divisors (see below), whose sum is σ = 221760. Its totient is φ = 182160.

The previous prime is 201451. The next prime is 201473. The reversal of 201457 is 754102.

201457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 201457 - 2³ = 201449 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207 + ... + 667.

It is an arithmetic number, because the mean of its divisors is an integer number (27720).

2²⁰¹⁴⁵⁷ is an apocalyptic number.

It is an amenable number.

201457 is a deficient number, since it is larger than the sum of its proper divisors (20303).

201457 is a wasteful number, since it uses less digits than its factorization.

201457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503.

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 201457 is about 448.8396150074. The cubic root of 201457 is about 58.6220211009.

Adding to 201457 its reverse (754102), we get a palindrome (955559).

The spelling of 201457 in words is "two hundred one thousand, four hundred fifty-seven".