78853481 has 4 divisors (see below), whose sum is σ = 90118272. Its totient is φ = 67588692.

The previous prime is 78853447. The next prime is 78853487. The reversal of 78853481 is 18435887.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 78853481 - 2¹⁰ = 78852457 is a prime.

It is a super-2 number, since 2×78853481² = 12435742931634722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78853487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5632385 + ... + 5632398.

It is an arithmetic number, because the mean of its divisors is an integer number (22529568).

Almost surely, 2^78853481 is an apocalyptic number.

It is an amenable number.

78853481 is a deficient number, since it is larger than the sum of its proper divisors (11264791).

78853481 is a wasteful number, since it uses less digits than its factorization.

78853481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11264790.

The product of its digits is 215040, while the sum is 44.

The square root of 78853481 is about 8879.9482543537. The cubic root of 78853481 is about 428.8186086434.

The spelling of 78853481 in words is "seventy-eight million, eight hundred fifty-three thousand, four hundred eighty-one".