78572311 has 2 divisors, whose sum is σ = 78572312. Its totient is φ = 78572310.

The previous prime is 78572303. The next prime is 78572369. The reversal of 78572311 is 11327587.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78572311 - 2³ = 78572303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78572371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39286155 + 39286156.

It is an arithmetic number, because the mean of its divisors is an integer number (39286156).

Almost surely, 2^78572311 is an apocalyptic number.

78572311 is a deficient number, since it is larger than the sum of its proper divisors (1).

78572311 is an equidigital number, since it uses as much as digits as its factorization.

78572311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11760, while the sum is 34.

The square root of 78572311 is about 8864.1023798239. The cubic root of 78572311 is about 428.3083182546.

Adding to 78572311 its reverse (11327587), we get a palindrome (89899898).

The spelling of 78572311 in words is "seventy-eight million, five hundred seventy-two thousand, three hundred eleven".