4257115 has 4 divisors (see below), whose sum is σ = 5108544. Its totient is φ = 3405688.

The previous prime is 4257101. The next prime is 4257131. The reversal of 4257115 is 5117524.

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

It is a cyclic number.

It is not a de Polignac number, because 4257115 - 2¹¹ = 4255067 is a prime.

It is a Duffinian number.

4257115 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 4257115.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 425707 + ... + 425716.

It is an arithmetic number, because the mean of its divisors is an integer number (1277136).

Almost surely, 2^4257115 is an apocalyptic number.

4257115 is a deficient number, since it is larger than the sum of its proper divisors (851429).

4257115 is an equidigital number, since it uses as much as digits as its factorization.

4257115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851428.

The product of its digits is 1400, while the sum is 25.

The square root of 4257115 is about 2063.2777321534. The cubic root of 4257115 is about 162.0709311902.

It can be divided in two parts, 4257 and 115, that multiplied together give a triangular number (489555 = T₉₈₉).

The spelling of 4257115 in words is "four million, two hundred fifty-seven thousand, one hundred fifteen".