72265549 has 2 divisors, whose sum is σ = 72265550. Its totient is φ = 72265548.

The previous prime is 72265511. The next prime is 72265559. The reversal of 72265549 is 94556227.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60996100 + 11269449 = 7810^2 + 3357^2 .

It is a cyclic number.

It is not a de Polignac number, because 72265549 - 2¹¹ = 72263501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72265559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36132774 + 36132775.

It is an arithmetic number, because the mean of its divisors is an integer number (36132775).

Almost surely, 2^72265549 is an apocalyptic number.

It is an amenable number.

72265549 is a deficient number, since it is larger than the sum of its proper divisors (1).

72265549 is an equidigital number, since it uses as much as digits as its factorization.

72265549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 151200, while the sum is 40.

The square root of 72265549 is about 8500.9145978536. The cubic root of 72265549 is about 416.5275854383.

The spelling of 72265549 in words is "seventy-two million, two hundred sixty-five thousand, five hundred forty-nine".