78152001 has 8 divisors (see below), whose sum is σ = 104574624. Its totient is φ = 51915360.

The previous prime is 78151991. The next prime is 78152003. The reversal of 78152001 is 10025187.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-78152001 is a prime.

It is a super-2 number, since 2×78152001² = 12215470520608002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78152003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45511 + ... + 47196.

It is an arithmetic number, because the mean of its divisors is an integer number (13071828).

Almost surely, 2^78152001 is an apocalyptic number.

It is an amenable number.

78152001 is a deficient number, since it is larger than the sum of its proper divisors (26422623).

78152001 is a wasteful number, since it uses less digits than its factorization.

78152001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92991.

The product of its (nonzero) digits is 560, while the sum is 24.

The square root of 78152001 is about 8840.3620400977. The cubic root of 78152001 is about 427.5432301278.

Adding to 78152001 its reverse (10025187), we get a palindrome (88177188).

The spelling of 78152001 in words is "seventy-eight million, one hundred fifty-two thousand, one".