20037197 has 2 divisors, whose sum is σ = 20037198. Its totient is φ = 20037196.

The previous prime is 20037179. The next prime is 20037211. The reversal of 20037197 is 79173002.

It is a happy number.

Together with previous prime (20037179) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15768841 + 4268356 = 3971^2 + 2066^2 .

It is a cyclic number.

It is not a de Polignac number, because 20037197 - 2¹⁸ = 19775053 is a prime.

It is a super-3 number, since 3×20037197³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20037107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10018598 + 10018599.

It is an arithmetic number, because the mean of its divisors is an integer number (10018599).

Almost surely, 2^20037197 is an apocalyptic number.

It is an amenable number.

20037197 is a deficient number, since it is larger than the sum of its proper divisors (1).

20037197 is an equidigital number, since it uses as much as digits as its factorization.

20037197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2646, while the sum is 29.

The square root of 20037197 is about 4476.2927741603. The cubic root of 20037197 is about 271.6099377619.

The spelling of 20037197 in words is "twenty million, thirty-seven thousand, one hundred ninety-seven".