3772521 has 16 divisors (see below), whose sum is σ = 5918400. Its totient is φ = 2366784.

The previous prime is 3772493. The next prime is 3772537. The reversal of 3772521 is 1252773.

It is not a de Polignac number, because 3772521 - 2⁹ = 3772009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a d-powerful number, because it can be written as 3¹³ + 7 + 7⁴ + 2⁹ + 5⁷ + 2²¹ + 1 .

It is not an unprimeable number, because it can be changed into a prime (3772541) 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, 3651 + ... + 4568.

It is an arithmetic number, because the mean of its divisors is an integer number (369900).

Almost surely, 2^3772521 is an apocalyptic number.

It is an amenable number.

3772521 is a deficient number, since it is larger than the sum of its proper divisors (2145879).

3772521 is a wasteful number, since it uses less digits than its factorization.

3772521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8245 (or 8239 counting only the distinct ones).

The product of its digits is 2940, while the sum is 27.

The square root of 3772521 is about 1942.2978659310. The cubic root of 3772521 is about 155.6720180186.

The spelling of 3772521 in words is "three million, seven hundred seventy-two thousand, five hundred twenty-one".