257051451 has 4 divisors (see below), whose sum is σ = 342735272. Its totient is φ = 171367632.

The previous prime is 257051387. The next prime is 257051461. The reversal of 257051451 is 154150752.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 257051451 - 2⁶ = 257051387 is a prime.

It is a super-2 number, since 2×257051451² = 132150896922410802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (257051461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42841906 + ... + 42841911.

It is an arithmetic number, because the mean of its divisors is an integer number (85683818).

Almost surely, 2^257051451 is an apocalyptic number.

257051451 is a deficient number, since it is larger than the sum of its proper divisors (85683821).

257051451 is an equidigital number, since it uses as much as digits as its factorization.

257051451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85683820.

The product of its (nonzero) digits is 7000, while the sum is 30.

The square root of 257051451 is about 16032.8241741747. The cubic root of 257051451 is about 635.8285429395.

The spelling of 257051451 in words is "two hundred fifty-seven million, fifty-one thousand, four hundred fifty-one".