16531037 has 2 divisors, whose sum is σ = 16531038. Its totient is φ = 16531036.

The previous prime is 16530989. The next prime is 16531051. The reversal of 16531037 is 73013561.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14945956 + 1585081 = 3866^2 + 1259^2 .

It is a cyclic number.

It is not a de Polignac number, because 16531037 - 2¹⁰ = 16530013 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 16530997 and 16531015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16533037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8265518 + 8265519.

It is an arithmetic number, because the mean of its divisors is an integer number (8265519).

Almost surely, 2^16531037 is an apocalyptic number.

It is an amenable number.

16531037 is a deficient number, since it is larger than the sum of its proper divisors (1).

16531037 is an equidigital number, since it uses as much as digits as its factorization.

16531037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1890, while the sum is 26.

The square root of 16531037 is about 4065.8377980436. The cubic root of 16531037 is about 254.7416940918.

Adding to 16531037 its reverse (73013561), we get a palindrome (89544598).

The spelling of 16531037 in words is "sixteen million, five hundred thirty-one thousand, thirty-seven".