3257121 has 16 divisors (see below), whose sum is σ = 5080064. Its totient is φ = 1817424.

The previous prime is 3257119. The next prime is 3257129. The reversal of 3257121 is 1217523.

It is not a de Polignac number, because 3257121 - 2¹ = 3257119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3257129) 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, 901 + ... + 2706.

It is an arithmetic number, because the mean of its divisors is an integer number (317504).

Almost surely, 2^3257121 is an apocalyptic number.

It is an amenable number.

3257121 is a deficient number, since it is larger than the sum of its proper divisors (1822943).

3257121 is a wasteful number, since it uses less digits than its factorization.

3257121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3660.

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

The square root of 3257121 is about 1804.7495671145. The cubic root of 3257121 is about 148.2329087826.

The spelling of 3257121 in words is "three million, two hundred fifty-seven thousand, one hundred twenty-one".