78022097 has 4 divisors (see below), whose sum is σ = 78040116. Its totient is φ = 78004080.

The previous prime is 78022073. The next prime is 78022099. The reversal of 78022097 is 79022087.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79022087 = 47 ⋅1681321.

It can be written as a sum of positive squares in 2 ways, for example, as 36857041 + 41165056 = 6071^2 + 6416^2 .

It is a cyclic number.

It is not a de Polignac number, because 78022097 - 2⁶ = 78022033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78022099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1847 + ... + 12627.

It is an arithmetic number, because the mean of its divisors is an integer number (19510029).

Almost surely, 2^78022097 is an apocalyptic number.

It is an amenable number.

78022097 is a deficient number, since it is larger than the sum of its proper divisors (18019).

78022097 is a wasteful number, since it uses less digits than its factorization.

78022097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18018.

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 78022097 is about 8833.0117740214. The cubic root of 78022097 is about 427.3062117701.

The spelling of 78022097 in words is "seventy-eight million, twenty-two thousand, ninety-seven".