72051011 has 2 divisors, whose sum is σ = 72051012. Its totient is φ = 72051010.

The previous prime is 72050999. The next prime is 72051017. The reversal of 72051011 is 11015027.

It is a strong prime.

It is an emirp because it is prime and its reverse (11015027) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72051011 - 2¹⁰ = 72049987 is a prime.

It is a super-2 number, since 2×72051011² = 10382696372244242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (72051017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36025505 + 36025506.

It is an arithmetic number, because the mean of its divisors is an integer number (36025506).

Almost surely, 2^72051011 is an apocalyptic number.

72051011 is a deficient number, since it is larger than the sum of its proper divisors (1).

72051011 is an equidigital number, since it uses as much as digits as its factorization.

72051011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70, while the sum is 17.

The square root of 72051011 is about 8488.2866940272. The cubic root of 72051011 is about 416.1149887838.

Adding to 72051011 its reverse (11015027), we get a palindrome (83066038).

The spelling of 72051011 in words is "seventy-two million, fifty-one thousand, eleven".