78753151 has 4 divisors (see below), whose sum is σ = 78778512. Its totient is φ = 78727792.

The previous prime is 78753137. The next prime is 78753179. The reversal of 78753151 is 15135787.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15135787 = 151 ⋅100237.

It is a cyclic number.

It is not a de Polignac number, because 78753151 - 2¹⁷ = 78622079 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 78753151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78753121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7246 + ... + 14491.

It is an arithmetic number, because the mean of its divisors is an integer number (19694628).

Almost surely, 2^78753151 is an apocalyptic number.

78753151 is the 7246-th pentagonal number.

78753151 is a deficient number, since it is larger than the sum of its proper divisors (25361).

78753151 is a wasteful number, since it uses less digits than its factorization.

78753151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25360.

The product of its digits is 29400, while the sum is 37.

The square root of 78753151 is about 8874.2972116106. The cubic root of 78753151 is about 428.6366609330.

It can be divided in two parts, 7875 and 3151, that added together give a triangular number (11026 = T₁₄₈).

The spelling of 78753151 in words is "seventy-eight million, seven hundred fifty-three thousand, one hundred fifty-one".