653257 has 4 divisors (see below), whose sum is σ = 712656. Its totient is φ = 593860.

The previous prime is 653243. The next prime is 653267. The reversal of 653257 is 752356.

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 a cyclic number.

It is not a de Polignac number, because 653257 - 2¹⁹ = 128969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (653207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29683 + ... + 29704.

It is an arithmetic number, because the mean of its divisors is an integer number (178164).

2⁶⁵³²⁵⁷ is an apocalyptic number.

It is an amenable number.

653257 is a deficient number, since it is larger than the sum of its proper divisors (59399).

653257 is a wasteful number, since it uses less digits than its factorization.

653257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59398.

The product of its digits is 6300, while the sum is 28.

The square root of 653257 is about 808.2431564820. The cubic root of 653257 is about 86.7683536868.

Subtracting 653257 from its reverse (752356), we obtain a palindrome (99099).

The spelling of 653257 in words is "six hundred fifty-three thousand, two hundred fifty-seven".