4257155 has 8 divisors (see below), whose sum is σ = 5838432. Its totient is φ = 2919168.

The previous prime is 4257133. The next prime is 4257161. The reversal of 4257155 is 5517524.

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

It is not a de Polignac number, because 4257155 - 2²² = 62851 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60782 + ... + 60851.

It is an arithmetic number, because the mean of its divisors is an integer number (729804).

Almost surely, 2^4257155 is an apocalyptic number.

4257155 is a deficient number, since it is larger than the sum of its proper divisors (1581277).

4257155 is a wasteful number, since it uses less digits than its factorization.

4257155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121645.

The product of its digits is 7000, while the sum is 29.

The square root of 4257155 is about 2063.2874254451. The cubic root of 4257155 is about 162.0714387966.

The spelling of 4257155 in words is "four million, two hundred fifty-seven thousand, one hundred fifty-five".