78131753 has 16 divisors (see below), whose sum is σ = 93279360. Its totient is φ = 64043136.

The previous prime is 78131747. The next prime is 78131791. The reversal of 78131753 is 35713187.

It is a cyclic number.

It is not a de Polignac number, because 78131753 - 2⁶ = 78131689 is a prime.

It is a super-2 number, since 2×78131753² = 12209141653706018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78131353) 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, 12725 + ... + 17837.

It is an arithmetic number, because the mean of its divisors is an integer number (5829960).

Almost surely, 2^78131753 is an apocalyptic number.

It is an amenable number.

78131753 is a deficient number, since it is larger than the sum of its proper divisors (15147607).

78131753 is a wasteful number, since it uses less digits than its factorization.

78131753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5216.

The product of its digits is 17640, while the sum is 35.

The square root of 78131753 is about 8839.2167639446. The cubic root of 78131753 is about 427.5063036130.

The spelling of 78131753 in words is "seventy-eight million, one hundred thirty-one thousand, seven hundred fifty-three".