78133955 has 8 divisors (see below), whose sum is σ = 99276192. Its totient is φ = 58830208.

The previous prime is 78133931. The next prime is 78134003. The reversal of 78133955 is 55933187.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 78133955 - 2²⁴ = 61356739 is a prime.

It is a super-2 number, since 2×78133955² = 12209829847884050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 459527 + ... + 459696.

It is an arithmetic number, because the mean of its divisors is an integer number (12409524).

Almost surely, 2^78133955 is an apocalyptic number.

78133955 is a deficient number, since it is larger than the sum of its proper divisors (21142237).

78133955 is a wasteful number, since it uses less digits than its factorization.

78133955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 919245.

The product of its digits is 113400, while the sum is 41.

The square root of 78133955 is about 8839.3413216144. The cubic root of 78133955 is about 427.5103197354.

The spelling of 78133955 in words is "seventy-eight million, one hundred thirty-three thousand, nine hundred fifty-five".