73397537 has 2 divisors, whose sum is σ = 73397538. Its totient is φ = 73397536.

The previous prime is 73397507. The next prime is 73397539. The reversal of 73397537 is 73579337.

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., 72318016 + 1079521 = 8504^2 + 1039^2 .

It is a cyclic number.

It is not a de Polignac number, because 73397537 - 2⁶ = 73397473 is a prime.

Together with 73397539, 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 (73397539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36698768 + 36698769.

It is an arithmetic number, because the mean of its divisors is an integer number (36698769).

Almost surely, 2^73397537 is an apocalyptic number.

It is an amenable number.

73397537 is a deficient number, since it is larger than the sum of its proper divisors (1).

73397537 is an equidigital number, since it uses as much as digits as its factorization.

73397537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 416745, while the sum is 44.

The square root of 73397537 is about 8567.2362521411. The cubic root of 73397537 is about 418.6911959604.

The spelling of 73397537 in words is "seventy-three million, three hundred ninety-seven thousand, five hundred thirty-seven".