78152301 has 24 divisors (see below), whose sum is σ = 119340000. Its totient is φ = 49146912.

The previous prime is 78152297. The next prime is 78152309. The reversal of 78152301 is 10325187.

It is not a de Polignac number, because 78152301 - 2² = 78152297 is a prime.

It is a super-2 number, since 2×78152301² = 12215564303189202, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78152309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45150 + ... + 46848.

It is an arithmetic number, because the mean of its divisors is an integer number (4972500).

Almost surely, 2^78152301 is an apocalyptic number.

It is an amenable number.

78152301 is a deficient number, since it is larger than the sum of its proper divisors (41187699).

78152301 is a wasteful number, since it uses less digits than its factorization.

78152301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1993 (or 1990 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 78152301 is about 8840.3790077123. The cubic root of 78152301 is about 427.5437771934.

Adding to 78152301 its reverse (10325187), we get a palindrome (88477488).

The spelling of 78152301 in words is "seventy-eight million, one hundred fifty-two thousand, three hundred one".