90216037 has 2 divisors, whose sum is σ = 90216038. Its totient is φ = 90216036.

The previous prime is 90216019. The next prime is 90216043. The reversal of 90216037 is 73061209.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88849476 + 1366561 = 9426^2 + 1169^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90216037 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 90215996 and 90216014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90216337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45108018 + 45108019.

It is an arithmetic number, because the mean of its divisors is an integer number (45108019).

Almost surely, 2^90216037 is an apocalyptic number.

It is an amenable number.

90216037 is a deficient number, since it is larger than the sum of its proper divisors (1).

90216037 is an equidigital number, since it uses as much as digits as its factorization.

90216037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 90216037 is about 9498.2123054815. The cubic root of 90216037 is about 448.4987619211.

The spelling of 90216037 in words is "ninety million, two hundred sixteen thousand, thirty-seven".