78811054 has 16 divisors (see below), whose sum is σ = 136080000. Its totient is φ = 33532344.

The previous prime is 78811049. The next prime is 78811063. The reversal of 78811054 is 45011887.

It is a super-2 number, since 2×78811054² = 12422364465181832, which contains 22 as substring.

It is a congruent number.

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, 18304 + ... + 22195.

It is an arithmetic number, because the mean of its divisors is an integer number (8505000).

Almost surely, 2^78811054 is an apocalyptic number.

78811054 is a deficient number, since it is larger than the sum of its proper divisors (57268946).

78811054 is a wasteful number, since it uses less digits than its factorization.

78811054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40647.

The product of its (nonzero) digits is 8960, while the sum is 34.

The square root of 78811054 is about 8877.5590113499. The cubic root of 78811054 is about 428.7416864376.

The spelling of 78811054 in words is "seventy-eight million, eight hundred eleven thousand, fifty-four".