78453 has 12 divisors (see below), whose sum is σ = 118560. Its totient is φ = 49896.

The previous prime is 78439. The next prime is 78467. The reversal of 78453 is 35487.

It is an interprime number because it is at equal distance from previous prime (78439) and next prime (78467).

It is not a de Polignac number, because 78453 - 2⁴ = 78437 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18 + ... + 396.

It is an arithmetic number, because the mean of its divisors is an integer number (9880).

2⁷⁸⁴⁵³ is an apocalyptic number.

It is an amenable number.

78453 is a deficient number, since it is larger than the sum of its proper divisors (40107).

78453 is a wasteful number, since it uses less digits than its factorization.

78453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408 (or 405 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 78453 is about 280.0946268674. The cubic root of 78453 is about 42.8091414951.

The spelling of 78453 in words is "seventy-eight thousand, four hundred fifty-three".