78150455 has 16 divisors (see below), whose sum is σ = 96422400. Its totient is φ = 60783360.

The previous prime is 78150451. The next prime is 78150487. The reversal of 78150455 is 55405187.

It is not a de Polignac number, because 78150455 - 2² = 78150451 is a prime.

It is a super-2 number, since 2×78150455² = 12214987233414050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78150451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25706 + ... + 28584.

It is an arithmetic number, because the mean of its divisors is an integer number (6026400).

Almost surely, 2^78150455 is an apocalyptic number.

78150455 is a deficient number, since it is larger than the sum of its proper divisors (18271945).

78150455 is a wasteful number, since it uses less digits than its factorization.

78150455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3034.

The product of its (nonzero) digits is 28000, while the sum is 35.

The square root of 78150455 is about 8840.2745998074. The cubic root of 78150455 is about 427.5404108944.

The spelling of 78150455 in words is "seventy-eight million, one hundred fifty thousand, four hundred fifty-five".