72229151 has 2 divisors, whose sum is σ = 72229152. Its totient is φ = 72229150.

The previous prime is 72229103. The next prime is 72229153. The reversal of 72229151 is 15192227.

It is a strong prime.

It is an emirp because it is prime and its reverse (15192227) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72229151 - 2²⁶ = 5120287 is a prime.

Together with 72229153, 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 (72229153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36114575 + 36114576.

It is an arithmetic number, because the mean of its divisors is an integer number (36114576).

Almost surely, 2^72229151 is an apocalyptic number.

72229151 is a deficient number, since it is larger than the sum of its proper divisors (1).

72229151 is an equidigital number, since it uses as much as digits as its factorization.

72229151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2520, while the sum is 29.

The square root of 72229151 is about 8498.7734997469. The cubic root of 72229151 is about 416.4576428570.

The spelling of 72229151 in words is "seventy-two million, two hundred twenty-nine thousand, one hundred fifty-one".