257555051 has 8 divisors (see below), whose sum is σ = 291965520. Its totient is φ = 225230112.

The previous prime is 257555033. The next prime is 257555057. The reversal of 257555051 is 150555752.

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

It is a cyclic number.

It is not a de Polignac number, because 257555051 - 2¹⁰ = 257554027 is a prime.

It is a super-2 number, since 2×257555051² = 132669208591225202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (257555057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 521120 + ... + 521613.

It is an arithmetic number, because the mean of its divisors is an integer number (36495690).

Almost surely, 2^257555051 is an apocalyptic number.

257555051 is a deficient number, since it is larger than the sum of its proper divisors (34410469).

257555051 is a wasteful number, since it uses less digits than its factorization.

257555051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042765.

The product of its (nonzero) digits is 43750, while the sum is 35.

The square root of 257555051 is about 16048.5217699326. The cubic root of 257555051 is about 636.2434979644.

The spelling of 257555051 in words is "two hundred fifty-seven million, five hundred fifty-five thousand, fifty-one".