78533001 has 12 divisors (see below), whose sum is σ = 113737728. Its totient is φ = 52216344.

The previous prime is 78532997. The next prime is 78533011. The reversal of 78533001 is 10033587.

It is not a de Polignac number, because 78533001 - 2² = 78532997 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (78533011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7945 + ... + 14838.

It is an arithmetic number, because the mean of its divisors is an integer number (9478144).

Almost surely, 2^78533001 is an apocalyptic number.

It is an amenable number.

78533001 is a deficient number, since it is larger than the sum of its proper divisors (35204727).

78533001 is a wasteful number, since it uses less digits than its factorization.

78533001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23172 (or 23169 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 78533001 is about 8861.8847318164. The cubic root of 78533001 is about 428.2368782932.

Adding to 78533001 its reverse (10033587), we get a palindrome (88566588).

The spelling of 78533001 in words is "seventy-eight million, five hundred thirty-three thousand, one".