3572121 has 8 divisors (see below), whose sum is σ = 5443264. Its totient is φ = 2041200.

The previous prime is 3572119. The next prime is 3572131. The reversal of 3572121 is 1212753.

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

It is not a de Polignac number, because 3572121 - 2¹ = 3572119 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: 170101 = 3572121 / (3 + 5 + 7 + 2 + 1 + 2 + 1).

It is a Duffinian number.

3572121 is a modest number, since divided by 2121 gives 357 as remainder.

It is not an unprimeable number, because it can be changed into a prime (3572131) 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, 85030 + ... + 85071.

It is an arithmetic number, because the mean of its divisors is an integer number (680408).

Almost surely, 2^3572121 is an apocalyptic number.

It is an amenable number.

3572121 is a deficient number, since it is larger than the sum of its proper divisors (1871143).

3572121 is a wasteful number, since it uses less digits than its factorization.

3572121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170111.

The product of its digits is 420, while the sum is 21.

The square root of 3572121 is about 1890.0055555474. The cubic root of 3572121 is about 152.8652322601.

Subtracting from 3572121 its sum of digits (21), we obtain a square (3572100 = 1890²).

Adding to 3572121 its reverse (1212753), we get a palindrome (4784874).

The spelling of 3572121 in words is "three million, five hundred seventy-two thousand, one hundred twenty-one".