73200137 has 2 divisors, whose sum is σ = 73200138. Its totient is φ = 73200136.

The previous prime is 73200121. The next prime is 73200139. The reversal of 73200137 is 73100237.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64176121 + 9024016 = 8011^2 + 3004^2 .

It is a cyclic number.

It is not a de Polignac number, because 73200137 - 2⁴ = 73200121 is a prime.

Together with 73200139, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (73200139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36600068 + 36600069.

It is an arithmetic number, because the mean of its divisors is an integer number (36600069).

Almost surely, 2^73200137 is an apocalyptic number.

It is an amenable number.

73200137 is a deficient number, since it is larger than the sum of its proper divisors (1).

73200137 is an equidigital number, since it uses as much as digits as its factorization.

73200137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 882, while the sum is 23.

The square root of 73200137 is about 8555.7078608377. The cubic root of 73200137 is about 418.3155073893.

It can be divided in two parts, 73200 and 137, that added together give a palindrome (73337).

The spelling of 73200137 in words is "seventy-three million, two hundred thousand, one hundred thirty-seven".