37721361 has 8 divisors (see below), whose sum is σ = 50433664. Its totient is φ = 25078320.

The previous prime is 37721347. The next prime is 37721371. The reversal of 37721361 is 16312773.

37721361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 37721361 - 2¹⁴ = 37704977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (37721371) 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 in 7 ways as a sum of consecutive naturals, for example, 16030 + ... + 18231.

It is an arithmetic number, because the mean of its divisors is an integer number (6304208).

Almost surely, 2^37721361 is an apocalyptic number.

It is an amenable number.

37721361 is a deficient number, since it is larger than the sum of its proper divisors (12712303).

37721361 is a wasteful number, since it uses less digits than its factorization.

37721361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34631.

The product of its digits is 5292, while the sum is 30.

The square root of 37721361 is about 6141.7718127589. The cubic root of 37721361 is about 335.3737893538.

The spelling of 37721361 in words is "thirty-seven million, seven hundred twenty-one thousand, three hundred sixty-one".