78552283 has 4 divisors (see below), whose sum is σ = 78800400. Its totient is φ = 78304168.

The previous prime is 78552259. The next prime is 78552301. The reversal of 78552283 is 38225587.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 78552283 - 2²¹ = 76455131 is a prime.

It is a super-2 number, since 2×78552283² = 12340922329024178, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78552083) 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, 123583 + ... + 124216.

It is an arithmetic number, because the mean of its divisors is an integer number (19700100).

Almost surely, 2^78552283 is an apocalyptic number.

78552283 is a deficient number, since it is larger than the sum of its proper divisors (248117).

78552283 is a wasteful number, since it uses less digits than its factorization.

78552283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248116.

The product of its digits is 134400, while the sum is 40.

The square root of 78552283 is about 8862.9725826046. The cubic root of 78552283 is about 428.2719233811.

The spelling of 78552283 in words is "seventy-eight million, five hundred fifty-two thousand, two hundred eighty-three".