4197557 has 16 divisors (see below), whose sum is σ = 5214720. Its totient is φ = 3290112.

The previous prime is 4197553. The next prime is 4197577. The reversal of 4197557 is 7557914.

It is not a de Polignac number, because 4197557 - 2² = 4197553 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 4197557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4197553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17444 + ... + 17682.

It is an arithmetic number, because the mean of its divisors is an integer number (325920).

Almost surely, 2^4197557 is an apocalyptic number.

4197557 is the 1673-rd pentagonal number.

It is an amenable number.

4197557 is a deficient number, since it is larger than the sum of its proper divisors (1017163).

4197557 is a wasteful number, since it uses less digits than its factorization.

4197557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452.

The product of its digits is 44100, while the sum is 38.

The square root of 4197557 is about 2048.7940355243. The cubic root of 4197557 is about 161.3115759464.

The spelling of 4197557 in words is "four million, one hundred ninety-seven thousand, five hundred fifty-seven".