3501381 has 8 divisors (see below), whose sum is σ = 5027680. Its totient is φ = 2154672.

The previous prime is 3501343. The next prime is 3501391. The reversal of 3501381 is 1831053.

It is a happy number.

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

It is not a de Polignac number, because 3501381 - 2⁹ = 3500869 is a prime.

It is a super-3 number, since 3×3501381³ (a number of 21 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

3501381 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3501331) 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, 44851 + ... + 44928.

It is an arithmetic number, because the mean of its divisors is an integer number (628460).

Almost surely, 2^3501381 is an apocalyptic number.

It is an amenable number.

3501381 is a deficient number, since it is larger than the sum of its proper divisors (1526299).

3501381 is a wasteful number, since it uses less digits than its factorization.

3501381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89795.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 3501381 is about 1871.1977447614. The cubic root of 3501381 is about 151.8494151554.

The spelling of 3501381 in words is "three million, five hundred one thousand, three hundred eighty-one".