257702053 has 8 divisors (see below), whose sum is σ = 301366208. Its totient is φ = 215750304.

The previous prime is 257702017. The next prime is 257702057. The reversal of 257702053 is 350207752.

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

It is a de Polignac number, because none of the positive numbers 2^k-257702053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257702057) 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, 427776 + ... + 428377.

It is an arithmetic number, because the mean of its divisors is an integer number (37670776).

Almost surely, 2^257702053 is an apocalyptic number.

It is an amenable number.

257702053 is a deficient number, since it is larger than the sum of its proper divisors (43664155).

257702053 is an equidigital number, since it uses as much as digits as its factorization.

257702053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856203.

The product of its (nonzero) digits is 14700, while the sum is 31.

The square root of 257702053 is about 16053.1010399860. The cubic root of 257702053 is about 636.3645222888.

The spelling of 257702053 in words is "two hundred fifty-seven million, seven hundred two thousand, fifty-three".