78951097 has 2 divisors, whose sum is σ = 78951098. Its totient is φ = 78951096.

The previous prime is 78951091. The next prime is 78951107. The reversal of 78951097 is 79015987.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73770921 + 5180176 = 8589^2 + 2276^2 .

It is an emirp because it is prime and its reverse (79015987) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78951097 - 2⁷ = 78950969 is a prime.

It is not a weakly prime, because it can be changed into another prime (78951091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39475548 + 39475549.

It is an arithmetic number, because the mean of its divisors is an integer number (39475549).

Almost surely, 2^78951097 is an apocalyptic number.

It is an amenable number.

78951097 is a deficient number, since it is larger than the sum of its proper divisors (1).

78951097 is an equidigital number, since it uses as much as digits as its factorization.

78951097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 158760, while the sum is 46.

The square root of 78951097 is about 8885.4429827668. The cubic root of 78951097 is about 428.9954864655.

The spelling of 78951097 in words is "seventy-eight million, nine hundred fifty-one thousand, ninety-seven".