72505151 has 2 divisors, whose sum is σ = 72505152. Its totient is φ = 72505150.

The previous prime is 72505127. The next prime is 72505183. The reversal of 72505151 is 15150527.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72505151 - 2⁶ = 72505087 is a prime.

It is a Sophie Germain prime.

It is a zygodrome in base 6.

It is a self number, because there is not a number n which added to its sum of digits gives 72505151.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72505351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36252575 + 36252576.

It is an arithmetic number, because the mean of its divisors is an integer number (36252576).

Almost surely, 2^72505151 is an apocalyptic number.

72505151 is a deficient number, since it is larger than the sum of its proper divisors (1).

72505151 is an equidigital number, since it uses as much as digits as its factorization.

72505151 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1750, while the sum is 26.

The square root of 72505151 is about 8514.9956547258. The cubic root of 72505151 is about 416.9874207148.

Adding to 72505151 its reverse (15150527), we get a palindrome (87655678).

The spelling of 72505151 in words is "seventy-two million, five hundred five thousand, one hundred fifty-one".