37221841 has 4 divisors (see below), whose sum is σ = 37349172. Its totient is φ = 37094512.

The previous prime is 37221827. The next prime is 37221853. The reversal of 37221841 is 14812273.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14812273 = 7 ⋅2116039.

It can be written as a sum of positive squares in 2 ways, for example, as 22043025 + 15178816 = 4695^2 + 3896^2 .

It is a cyclic number.

It is not a de Polignac number, because 37221841 - 2¹⁵ = 37189073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (37222841) 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, 63226 + ... + 63811.

It is an arithmetic number, because the mean of its divisors is an integer number (9337293).

Almost surely, 2^37221841 is an apocalyptic number.

It is an amenable number.

37221841 is a deficient number, since it is larger than the sum of its proper divisors (127331).

37221841 is a wasteful number, since it uses less digits than its factorization.

37221841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127330.

The product of its digits is 2688, while the sum is 28.

The square root of 37221841 is about 6100.9704965686. The cubic root of 37221841 is about 333.8868256523.

The spelling of 37221841 in words is "thirty-seven million, two hundred twenty-one thousand, eight hundred forty-one".