3521251 has 8 divisors (see below), whose sum is σ = 3726800. Its totient is φ = 3317760.

The previous prime is 3521249. The next prime is 3521257. The reversal of 3521251 is 1521253.

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

It is a 13-Lehmer number, since φ(3521251) divides (3521251-1)¹³.

It is a cyclic number.

It is not a de Polignac number, because 3521251 - 2¹ = 3521249 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

3521251 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3521257) 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, 4195 + ... + 4963.

It is an arithmetic number, because the mean of its divisors is an integer number (465850).

Almost surely, 2^3521251 is an apocalyptic number.

3521251 is a deficient number, since it is larger than the sum of its proper divisors (205549).

3521251 is a wasteful number, since it uses less digits than its factorization.

3521251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1029.

The product of its digits is 300, while the sum is 19.

The square root of 3521251 is about 1876.4996669331. The cubic root of 3521251 is about 152.1361171048.

The spelling of 3521251 in words is "three million, five hundred twenty-one thousand, two hundred fifty-one".