78434051 has 4 divisors (see below), whose sum is σ = 78602472. Its totient is φ = 78265632.

The previous prime is 78434029. The next prime is 78434089. The reversal of 78434051 is 15043487.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 78434051 - 2¹⁰ = 78433027 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78433999 and 78434017.

It is not an unprimeable number, because it can be changed into a prime (78434351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83510 + ... + 84443.

It is an arithmetic number, because the mean of its divisors is an integer number (19650618).

Almost surely, 2^78434051 is an apocalyptic number.

78434051 is a deficient number, since it is larger than the sum of its proper divisors (168421).

78434051 is a wasteful number, since it uses less digits than its factorization.

78434051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168420.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 78434051 is about 8856.3000739587. The cubic root of 78434051 is about 428.0569460870.

The spelling of 78434051 in words is "seventy-eight million, four hundred thirty-four thousand, fifty-one".