37373521 has 4 divisors (see below), whose sum is σ = 37624500. Its totient is φ = 37122544.

The previous prime is 37373519. The next prime is 37373527. The reversal of 37373521 is 12537373.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12537373 = 3259 ⋅3847.

It can be written as a sum of positive squares in 2 ways, for example, as 12173121 + 25200400 = 3489^2 + 5020^2 .

It is a cyclic number.

It is not a de Polignac number, because 37373521 - 2¹ = 37373519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (37373527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125266 + ... + 125563.

It is an arithmetic number, because the mean of its divisors is an integer number (9406125).

Almost surely, 2^37373521 is an apocalyptic number.

It is an amenable number.

37373521 is a deficient number, since it is larger than the sum of its proper divisors (250979).

37373521 is a wasteful number, since it uses less digits than its factorization.

37373521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250978.

The product of its digits is 13230, while the sum is 31.

The square root of 37373521 is about 6113.3886675068. The cubic root of 37373521 is about 334.3397435794.

The spelling of 37373521 in words is "thirty-seven million, three hundred seventy-three thousand, five hundred twenty-one".