37873561 has 4 divisors (see below), whose sum is σ = 41316624. Its totient is φ = 34430500.

The previous prime is 37873547. The next prime is 37873567. The reversal of 37873561 is 16537873.

37873561 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.

It is a cyclic number.

It is not a de Polignac number, because 37873561 - 2⁵ = 37873529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (37873567) 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, 1721515 + ... + 1721536.

It is an arithmetic number, because the mean of its divisors is an integer number (10329156).

Almost surely, 2^37873561 is an apocalyptic number.

It is an amenable number.

37873561 is a deficient number, since it is larger than the sum of its proper divisors (3443063).

37873561 is a wasteful number, since it uses less digits than its factorization.

37873561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3443062.

The product of its digits is 105840, while the sum is 40.

The square root of 37873561 is about 6154.1499006768. The cubic root of 37873561 is about 335.8242449348.

The spelling of 37873561 in words is "thirty-seven million, eight hundred seventy-three thousand, five hundred sixty-one".