78551373 has 8 divisors (see below), whose sum is σ = 110896128. Its totient is φ = 49287104.

The previous prime is 78551357. The next prime is 78551381. The reversal of 78551373 is 37315587.

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 78551373 - 2⁴ = 78551357 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78551323) 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, 770061 + ... + 770162.

It is an arithmetic number, because the mean of its divisors is an integer number (13862016).

Almost surely, 2^78551373 is an apocalyptic number.

It is an amenable number.

78551373 is a deficient number, since it is larger than the sum of its proper divisors (32344755).

78551373 is a wasteful number, since it uses less digits than its factorization.

78551373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1540243.

The product of its digits is 88200, while the sum is 39.

The square root of 78551373 is about 8862.9212452780. The cubic root of 78551373 is about 428.2702695826.

The spelling of 78551373 in words is "seventy-eight million, five hundred fifty-one thousand, three hundred seventy-three".