3761221 has 4 divisors (see below), whose sum is σ = 3959200. Its totient is φ = 3563244.

The previous prime is 3761203. The next prime is 3761227. The reversal of 3761221 is 1221673.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1221673 = 43 ⋅28411.

It is a cyclic number.

It is not a de Polignac number, because 3761221 - 2⁵ = 3761189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3761192 and 3761201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3761227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98961 + ... + 98998.

It is an arithmetic number, because the mean of its divisors is an integer number (989800).

Almost surely, 2^3761221 is an apocalyptic number.

It is an amenable number.

3761221 is a deficient number, since it is larger than the sum of its proper divisors (197979).

3761221 is a wasteful number, since it uses less digits than its factorization.

3761221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197978.

The product of its digits is 504, while the sum is 22.

The square root of 3761221 is about 1939.3867587462. The cubic root of 3761221 is about 155.5164321300.

Adding to 3761221 its reverse (1221673), we get a palindrome (4982894).

The spelling of 3761221 in words is "three million, seven hundred sixty-one thousand, two hundred twenty-one".