3700521 has 12 divisors (see below), whose sum is σ = 5831280. Its totient is φ = 2242680.

The previous prime is 3700517. The next prime is 3700523. The reversal of 3700521 is 1250073.

3700521 = T₅₁₀ + T₅₁₁ + ... + T₅₃₆.

It is not a de Polignac number, because 3700521 - 2² = 3700517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3700494 and 3700503.

It is not an unprimeable number, because it can be changed into a prime (3700523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18591 + ... + 18788.

It is an arithmetic number, because the mean of its divisors is an integer number (485940).

Almost surely, 2^3700521 is an apocalyptic number.

It is an amenable number.

3700521 is a deficient number, since it is larger than the sum of its proper divisors (2130759).

3700521 is a wasteful number, since it uses less digits than its factorization.

3700521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37396 (or 37393 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 18.

The square root of 3700521 is about 1923.6738289014. The cubic root of 3700521 is about 154.6752966804.

Adding to 3700521 its reverse (1250073), we get a palindrome (4950594).

The spelling of 3700521 in words is "three million, seven hundred thousand, five hundred twenty-one".