37325221 has 2 divisors, whose sum is σ = 37325222. Its totient is φ = 37325220.

The previous prime is 37325219. The next prime is 37325261. The reversal of 37325221 is 12252373.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28740321 + 8584900 = 5361^2 + 2930^2 .

It is a cyclic number.

It is not a de Polignac number, because 37325221 - 2¹ = 37325219 is a prime.

Together with 37325219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (37325261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18662610 + 18662611.

It is an arithmetic number, because the mean of its divisors is an integer number (18662611).

Almost surely, 2^37325221 is an apocalyptic number.

It is an amenable number.

37325221 is a deficient number, since it is larger than the sum of its proper divisors (1).

37325221 is an equidigital number, since it uses as much as digits as its factorization.

37325221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2520, while the sum is 25.

The square root of 37325221 is about 6109.4370444420. The cubic root of 37325221 is about 334.1956525155.

Adding to 37325221 its reverse (12252373), we get a palindrome (49577594).

The spelling of 37325221 in words is "thirty-seven million, three hundred twenty-five thousand, two hundred twenty-one".