72169033 has 2 divisors, whose sum is σ = 72169034. Its totient is φ = 72169032.

The previous prime is 72169021. The next prime is 72169037. The reversal of 72169033 is 33096127.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50013184 + 22155849 = 7072^2 + 4707^2 .

It is a cyclic number.

It is not a de Polignac number, because 72169033 - 2⁵ = 72169001 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72168986 and 72169004.

It is not a weakly prime, because it can be changed into another prime (72169037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36084516 + 36084517.

It is an arithmetic number, because the mean of its divisors is an integer number (36084517).

Almost surely, 2^72169033 is an apocalyptic number.

It is an amenable number.

72169033 is a deficient number, since it is larger than the sum of its proper divisors (1).

72169033 is an equidigital number, since it uses as much as digits as its factorization.

72169033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 72169033 is about 8495.2359001972. The cubic root of 72169033 is about 416.3420683297.

The spelling of 72169033 in words is "seventy-two million, one hundred sixty-nine thousand, thirty-three".