37328561 has 4 divisors (see below), whose sum is σ = 37493232. Its totient is φ = 37163892.

The previous prime is 37328519. The next prime is 37328569. The reversal of 37328561 is 16582373.

37328561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16582373 = 131 ⋅126583.

It is a cyclic number.

It is not a de Polignac number, because 37328561 - 2¹⁸ = 37066417 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (37328569) 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 3 ways as a sum of consecutive naturals, for example, 81995 + ... + 82448.

It is an arithmetic number, because the mean of its divisors is an integer number (9373308).

Almost surely, 2^37328561 is an apocalyptic number.

It is an amenable number.

37328561 is a deficient number, since it is larger than the sum of its proper divisors (164671).

37328561 is a wasteful number, since it uses less digits than its factorization.

37328561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164670.

The product of its digits is 30240, while the sum is 35.

The square root of 37328561 is about 6109.7103859348. The cubic root of 37328561 is about 334.2056205760.

The spelling of 37328561 in words is "thirty-seven million, three hundred twenty-eight thousand, five hundred sixty-one".