72352061 has 2 divisors, whose sum is σ = 72352062. Its totient is φ = 72352060.

The previous prime is 72352001. The next prime is 72352067. The reversal of 72352061 is 16025327.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72352036 + 25 = 8506^2 + 5^2 .

It is an emirp because it is prime and its reverse (16025327) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72352061 - 2¹⁴ = 72335677 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72352061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72352067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36176030 + 36176031.

It is an arithmetic number, because the mean of its divisors is an integer number (36176031).

Almost surely, 2^72352061 is an apocalyptic number.

It is an amenable number.

72352061 is a deficient number, since it is larger than the sum of its proper divisors (1).

72352061 is an equidigital number, since it uses as much as digits as its factorization.

72352061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 72352061 is about 8506.0014695508. The cubic root of 72352061 is about 416.6937331395.

Adding to 72352061 its reverse (16025327), we get a palindrome (88377388).

The spelling of 72352061 in words is "seventy-two million, three hundred fifty-two thousand, sixty-one".