37089821 has 2 divisors, whose sum is σ = 37089822. Its totient is φ = 37089820.

The previous prime is 37089809. The next prime is 37089827. The reversal of 37089821 is 12898073.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28504921 + 8584900 = 5339^2 + 2930^2 .

It is a cyclic number.

It is not a de Polignac number, because 37089821 - 2¹⁰ = 37088797 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (37089827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18544910 + 18544911.

It is an arithmetic number, because the mean of its divisors is an integer number (18544911).

Almost surely, 2^37089821 is an apocalyptic number.

It is an amenable number.

37089821 is a deficient number, since it is larger than the sum of its proper divisors (1).

37089821 is an equidigital number, since it uses as much as digits as its factorization.

37089821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 37089821 is about 6090.1412955694. The cubic root of 37089821 is about 333.4916100558.

The spelling of 37089821 in words is "thirty-seven million, eighty-nine thousand, eight hundred twenty-one".