72211379 has 2 divisors, whose sum is σ = 72211380. Its totient is φ = 72211378.

The previous prime is 72211357. The next prime is 72211397. The reversal of 72211379 is 97311227.

Together with next prime (72211397) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72211379 - 2⁸ = 72211123 is a prime.

It is not a weakly prime, because it can be changed into another prime (72271379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36105689 + 36105690.

It is an arithmetic number, because the mean of its divisors is an integer number (36105690).

Almost surely, 2^72211379 is an apocalyptic number.

72211379 is a deficient number, since it is larger than the sum of its proper divisors (1).

72211379 is an equidigital number, since it uses as much as digits as its factorization.

72211379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5292, while the sum is 32.

The square root of 72211379 is about 8497.7278727905. The cubic root of 72211379 is about 416.4234835541.

The spelling of 72211379 in words is "seventy-two million, two hundred eleven thousand, three hundred seventy-nine".