78953523 has 16 divisors (see below), whose sum is σ = 117947136. Its totient is φ = 46556640.

The previous prime is 78953519. The next prime is 78953527. The reversal of 78953523 is 32535987.

It is an interprime number because it is at equal distance from previous prime (78953519) and next prime (78953527).

It is not a de Polignac number, because 78953523 - 2² = 78953519 is a prime.

It is a super-2 number, since 2×78953523² = 12467317588223058, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78953527) 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, 31111 + ... + 33552.

It is an arithmetic number, because the mean of its divisors is an integer number (7371696).

Almost surely, 2^78953523 is an apocalyptic number.

78953523 is a deficient number, since it is larger than the sum of its proper divisors (38993613).

78953523 is a wasteful number, since it uses less digits than its factorization.

78953523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64714.

The product of its digits is 226800, while the sum is 42.

The square root of 78953523 is about 8885.5794971403. The cubic root of 78953523 is about 428.9998804614. Note that the first 3 decimals are identical.

The spelling of 78953523 in words is "seventy-eight million, nine hundred fifty-three thousand, five hundred twenty-three".