3672521 has 2 divisors, whose sum is σ = 3672522. Its totient is φ = 3672520.

The previous prime is 3672511. The next prime is 3672541. The reversal of 3672521 is 1252763.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3474496 + 198025 = 1864^2 + 445^2 .

It is a cyclic number.

It is not a de Polignac number, because 3672521 - 2⁶ = 3672457 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (3672511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1836260 + 1836261.

It is an arithmetic number, because the mean of its divisors is an integer number (1836261).

Almost surely, 2^3672521 is an apocalyptic number.

It is an amenable number.

3672521 is a deficient number, since it is larger than the sum of its proper divisors (1).

3672521 is an equidigital number, since it uses as much as digits as its factorization.

3672521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2520, while the sum is 26.

The square root of 3672521 is about 1916.3822687554. The cubic root of 3672521 is about 154.2841915961.

The spelling of 3672521 in words is "three million, six hundred seventy-two thousand, five hundred twenty-one".