37222091 has 4 divisors (see below), whose sum is σ = 37237872. Its totient is φ = 37206312.

The previous prime is 37222079. The next prime is 37222117. The reversal of 37222091 is 19022273.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19022273 = 193 ⋅98561.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-37222091 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 37222091.

It is not an unprimeable number, because it can be changed into a prime (37222021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3560 + ... + 9333.

It is an arithmetic number, because the mean of its divisors is an integer number (9309468).

Almost surely, 2^37222091 is an apocalyptic number.

37222091 is a deficient number, since it is larger than the sum of its proper divisors (15781).

37222091 is a wasteful number, since it uses less digits than its factorization.

37222091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15780.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 37222091 is about 6100.9909850778. The cubic root of 37222091 is about 333.8875731661.

The spelling of 37222091 in words is "thirty-seven million, two hundred twenty-two thousand, ninety-one".