78533051 has 4 divisors (see below), whose sum is σ = 78940152. Its totient is φ = 78125952.

The previous prime is 78533041. The next prime is 78533069. The reversal of 78533051 is 15033587.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78533051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78532999 and 78533017.

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 3 ways as a sum of consecutive naturals, for example, 203261 + ... + 203646.

It is an arithmetic number, because the mean of its divisors is an integer number (19735038).

Almost surely, 2^78533051 is an apocalyptic number.

78533051 is a deficient number, since it is larger than the sum of its proper divisors (407101).

78533051 is a wasteful number, since it uses less digits than its factorization.

78533051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407100.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 78533051 is about 8861.8875528862. The cubic root of 78533051 is about 428.2369691757.

The spelling of 78533051 in words is "seventy-eight million, five hundred thirty-three thousand, fifty-one".