72055069 has 2 divisors, whose sum is σ = 72055070. Its totient is φ = 72055068.

The previous prime is 72055063. The next prime is 72055073. The reversal of 72055069 is 96055027.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45738169 + 26316900 = 6763^2 + 5130^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72055069 is a prime.

It is a super-2 number, since 2×72055069² = 10383865937189522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72055063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36027534 + 36027535.

It is an arithmetic number, because the mean of its divisors is an integer number (36027535).

Almost surely, 2^72055069 is an apocalyptic number.

It is an amenable number.

72055069 is a deficient number, since it is larger than the sum of its proper divisors (1).

72055069 is an equidigital number, since it uses as much as digits as its factorization.

72055069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 72055069 is about 8488.5257259432. The cubic root of 72055069 is about 416.1228006701.

The spelling of 72055069 in words is "seventy-two million, fifty-five thousand, sixty-nine".