73220153 has 2 divisors, whose sum is σ = 73220154. Its totient is φ = 73220152.

The previous prime is 73220143. The next prime is 73220177. The reversal of 73220153 is 35102237.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53042089 + 20178064 = 7283^2 + 4492^2 .

It is an emirp because it is prime and its reverse (35102237) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73220153 - 2²² = 69025849 is a prime.

It is a super-2 number, since 2×73220153² = 10722381610686818, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (73220113) 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, 36610076 + 36610077.

It is an arithmetic number, because the mean of its divisors is an integer number (36610077).

Almost surely, 2^73220153 is an apocalyptic number.

It is an amenable number.

73220153 is a deficient number, since it is larger than the sum of its proper divisors (1).

73220153 is an equidigital number, since it uses as much as digits as its factorization.

73220153 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 73220153 is about 8556.8775262943. The cubic root of 73220153 is about 418.3536322730.

The spelling of 73220153 in words is "seventy-three million, two hundred twenty thousand, one hundred fifty-three".