73558157 has 2 divisors, whose sum is σ = 73558158. Its totient is φ = 73558156.

The previous prime is 73558153. The next prime is 73558159. The reversal of 73558157 is 75185537.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55145476 + 18412681 = 7426^2 + 4291^2 .

It is a cyclic number.

It is not a de Polignac number, because 73558157 - 2² = 73558153 is a prime.

It is a super-2 number, since 2×73558157² = 10821604922473298, which contains 22 as substring.

Together with 73558159, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73558153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36779078 + 36779079.

It is an arithmetic number, because the mean of its divisors is an integer number (36779079).

Almost surely, 2^73558157 is an apocalyptic number.

It is an amenable number.

73558157 is a deficient number, since it is larger than the sum of its proper divisors (1).

73558157 is an equidigital number, since it uses as much as digits as its factorization.

73558157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 147000, while the sum is 41.

The square root of 73558157 is about 8576.6052141859. The cubic root of 73558157 is about 418.9963886885.

The spelling of 73558157 in words is "seventy-three million, five hundred fifty-eight thousand, one hundred fifty-seven".