3721503 has 8 divisors (see below), whose sum is σ = 4973616. Its totient is φ = 2475200.

The previous prime is 3721489. The next prime is 3721537. The reversal of 3721503 is 3051273.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 3721503 - 2⁶ = 3721439 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3721503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3721583) 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, 373 + ... + 2753.

It is an arithmetic number, because the mean of its divisors is an integer number (621702).

Almost surely, 2^3721503 is an apocalyptic number.

3721503 is a deficient number, since it is larger than the sum of its proper divisors (1252113).

3721503 is a wasteful number, since it uses less digits than its factorization.

3721503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2905.

The product of its (nonzero) digits is 630, while the sum is 21.

The square root of 3721503 is about 1929.1197474496. The cubic root of 3721503 is about 154.9670828469.

Adding to 3721503 its reverse (3051273), we get a palindrome (6772776).

It can be divided in two parts, 3721 and 503, that added together give a palindrome (4224).

The spelling of 3721503 in words is "three million, seven hundred twenty-one thousand, five hundred three".