37442221 has 8 divisors (see below), whose sum is σ = 38962944. Its totient is φ = 35951760.

The previous prime is 37442201. The next prime is 37442231. The reversal of 37442221 is 12224473.

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 37442221 - 2¹¹ = 37440173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (37442201) 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, 5025 + ... + 10006.

It is an arithmetic number, because the mean of its divisors is an integer number (4870368).

Almost surely, 2^37442221 is an apocalyptic number.

It is an amenable number.

37442221 is a deficient number, since it is larger than the sum of its proper divisors (1520723).

37442221 is a wasteful number, since it uses less digits than its factorization.

37442221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15131.

The product of its digits is 2688, while the sum is 25.

The square root of 37442221 is about 6119.0049027599. The cubic root of 37442221 is about 334.5444792690.

Adding to 37442221 its reverse (12224473), we get a palindrome (49666694).

The spelling of 37442221 in words is "thirty-seven million, four hundred forty-two thousand, two hundred twenty-one".