73712537 has 2 divisors, whose sum is σ = 73712538. Its totient is φ = 73712536.

The previous prime is 73712503. The next prime is 73712543. The reversal of 73712537 is 73521737.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72522256 + 1190281 = 8516^2 + 1091^2 .

It is an emirp because it is prime and its reverse (73521737) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73712537 - 2⁸ = 73712281 is a prime.

It is a super-2 number, since 2×73712537² = 10867076221952738, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 73712497 and 73712506.

It is not a weakly prime, because it can be changed into another prime (73712557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36856268 + 36856269.

It is an arithmetic number, because the mean of its divisors is an integer number (36856269).

Almost surely, 2^73712537 is an apocalyptic number.

It is an amenable number.

73712537 is a deficient number, since it is larger than the sum of its proper divisors (1).

73712537 is an equidigital number, since it uses as much as digits as its factorization.

73712537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30870, while the sum is 35.

The square root of 73712537 is about 8585.6005614051. The cubic root of 73712537 is about 419.2893064085.

The spelling of 73712537 in words is "seventy-three million, seven hundred twelve thousand, five hundred thirty-seven".