4288557 has 32 divisors (see below), whose sum is σ = 7354368. Its totient is φ = 2160576.

The previous prime is 4288541. The next prime is 4288577. The reversal of 4288557 is 7558824.

It is not a de Polignac number, because 4288557 - 2⁴ = 4288541 is a prime.

It is a super-3 number, since 3×4288557³ (a number of 21 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a d-powerful number, because it can be written as 4¹¹ + 2⁵ + 8² + 8² + 5⁶ + 5⁷ + 7³ .

4288557 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4288517) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5938 + ... + 6620.

It is an arithmetic number, because the mean of its divisors is an integer number (229824).

Almost surely, 2^4288557 is an apocalyptic number.

It is an amenable number.

4288557 is a deficient number, since it is larger than the sum of its proper divisors (3065811).

4288557 is a wasteful number, since it uses less digits than its factorization.

4288557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729.

The product of its digits is 89600, while the sum is 39.

The square root of 4288557 is about 2070.8831449408. The cubic root of 4288557 is about 162.4689581731.

The spelling of 4288557 in words is "four million, two hundred eighty-eight thousand, five hundred fifty-seven".