4218501 has 8 divisors (see below), whose sum is σ = 6428224. Its totient is φ = 2410560.

The previous prime is 4218497. The next prime is 4218509. The reversal of 4218501 is 1058124.

4218501 = T₃₃₄ + T₃₃₅ + ... + T₃₉₆.

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

It is not a de Polignac number, because 4218501 - 2² = 4218497 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 200881 = 4218501 / (4 + 2 + 1 + 8 + 5 + 0 + 1).

It is a Duffinian number.

4218501 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4218509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100420 + ... + 100461.

It is an arithmetic number, because the mean of its divisors is an integer number (803528).

Almost surely, 2^4218501 is an apocalyptic number.

It is an amenable number.

4218501 is a deficient number, since it is larger than the sum of its proper divisors (2209723).

4218501 is a wasteful number, since it uses less digits than its factorization.

4218501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200891.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 4218501 is about 2053.8989751202. The cubic root of 4218501 is about 161.5794227018.

The spelling of 4218501 in words is "four million, two hundred eighteen thousand, five hundred one".