78105045 has 8 divisors (see below), whose sum is σ = 124968096. Its totient is φ = 41656016.

The previous prime is 78105043. The next prime is 78105047. The reversal of 78105045 is 54050187.

It is an interprime number because it is at equal distance from previous prime (78105043) and next prime (78105047).

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 78105045 - 2¹ = 78105043 is a prime.

It is a super-2 number, since 2×78105045² = 12200796108904050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78105043) 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, 2603487 + ... + 2603516.

It is an arithmetic number, because the mean of its divisors is an integer number (15621012).

Almost surely, 2^78105045 is an apocalyptic number.

It is an amenable number.

78105045 is a deficient number, since it is larger than the sum of its proper divisors (46863051).

78105045 is a wasteful number, since it uses less digits than its factorization.

78105045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5207011.

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 78105045 is about 8837.7058674749. The cubic root of 78105045 is about 427.4575861618.

The spelling of 78105045 in words is "seventy-eight million, one hundred five thousand, forty-five".