72137159 has 2 divisors, whose sum is σ = 72137160. Its totient is φ = 72137158.

The previous prime is 72137141. The next prime is 72137173. The reversal of 72137159 is 95173127.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72137159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72137059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36068579 + 36068580.

It is an arithmetic number, because the mean of its divisors is an integer number (36068580).

Almost surely, 2^72137159 is an apocalyptic number.

72137159 is a deficient number, since it is larger than the sum of its proper divisors (1).

72137159 is an equidigital number, since it uses as much as digits as its factorization.

72137159 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13230, while the sum is 35.

The square root of 72137159 is about 8493.3597003777. The cubic root of 72137159 is about 416.2807657613.

The spelling of 72137159 in words is "seventy-two million, one hundred thirty-seven thousand, one hundred fifty-nine".