78081201 has 24 divisors (see below), whose sum is σ = 123420960. Its totient is φ = 47174400.

The previous prime is 78081173. The next prime is 78081233. The reversal of 78081201 is 10218087.

It is not a de Polignac number, because 78081201 - 2¹⁴ = 78064817 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78081271) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36481 + ... + 38561.

It is an arithmetic number, because the mean of its divisors is an integer number (5142540).

Almost surely, 2^78081201 is an apocalyptic number.

It is an amenable number.

78081201 is a deficient number, since it is larger than the sum of its proper divisors (45339759).

78081201 is a wasteful number, since it uses less digits than its factorization.

78081201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2477 (or 2474 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 27.

The square root of 78081201 is about 8836.3567718829. The cubic root of 78081201 is about 427.4140834831.

Adding to 78081201 its reverse (10218087), we get a palindrome (88299288).

It can be divided in two parts, 7808 and 1201, that added together give a palindrome (9009).

The spelling of 78081201 in words is "seventy-eight million, eighty-one thousand, two hundred one".