90810037 has 2 divisors, whose sum is σ = 90810038. Its totient is φ = 90810036.

The previous prime is 90810019. The next prime is 90810047. The reversal of 90810037 is 73001809.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73119601 + 17690436 = 8551^2 + 4206^2 .

It is an emirp because it is prime and its reverse (73001809) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90810037 - 2¹⁹ = 90285749 is a prime.

It is equal to p_5261293 and since 90810037 and 5261293 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 90809987 and 90810014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90810007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45405018 + 45405019.

It is an arithmetic number, because the mean of its divisors is an integer number (45405019).

Almost surely, 2^90810037 is an apocalyptic number.

It is an amenable number.

90810037 is a deficient number, since it is larger than the sum of its proper divisors (1).

90810037 is an equidigital number, since it uses as much as digits as its factorization.

90810037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 90810037 is about 9529.4300459157. The cubic root of 90810037 is about 449.4809439076.

The spelling of 90810037 in words is "ninety million, eight hundred ten thousand, thirty-seven".