37720481 has 2 divisors, whose sum is σ = 37720482. Its totient is φ = 37720480.

The previous prime is 37720469. The next prime is 37720493. The reversal of 37720481 is 18402773.

It is a happy number.

37720481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (37720469) and next prime (37720493).

It can be written as a sum of positive squares in only one way, i.e., 30913600 + 6806881 = 5560^2 + 2609^2 .

It is a cyclic number.

It is not a de Polignac number, because 37720481 - 2¹⁴ = 37704097 is a prime.

It is a super-2 number, since 2×37720481² = 2845669373742722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (37720981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18860240 + 18860241.

It is an arithmetic number, because the mean of its divisors is an integer number (18860241).

Almost surely, 2^37720481 is an apocalyptic number.

It is an amenable number.

37720481 is a deficient number, since it is larger than the sum of its proper divisors (1).

37720481 is an equidigital number, since it uses as much as digits as its factorization.

37720481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 37720481 is about 6141.7001717765. The cubic root of 37720481 is about 335.3711813600.

The spelling of 37720481 in words is "thirty-seven million, seven hundred twenty thousand, four hundred eighty-one".