37223881 has 2 divisors, whose sum is σ = 37223882. Its totient is φ = 37223880.

The previous prime is 37223873. The next prime is 37223899. The reversal of 37223881 is 18832273.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27206656 + 10017225 = 5216^2 + 3165^2 .

It is a cyclic number.

It is not a de Polignac number, because 37223881 - 2³ = 37223873 is a prime.

It is a super-2 number, since 2×37223881² = 2771234633404322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (37223981) 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 as a sum of consecutive naturals, namely, 18611940 + 18611941.

It is an arithmetic number, because the mean of its divisors is an integer number (18611941).

Almost surely, 2^37223881 is an apocalyptic number.

It is an amenable number.

37223881 is a deficient number, since it is larger than the sum of its proper divisors (1).

37223881 is an equidigital number, since it uses as much as digits as its factorization.

37223881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 34.

The square root of 37223881 is about 6101.1376807936. The cubic root of 37223881 is about 333.8929252671.

The spelling of 37223881 in words is "thirty-seven million, two hundred twenty-three thousand, eight hundred eighty-one".