552778505 has 4 divisors (see below), whose sum is σ = 663334212. Its totient is φ = 442222800.

The previous prime is 552778489. The next prime is 552778519. The reversal of 552778505 is 505877255.

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

It can be written as a sum of positive squares in 2 ways, for example, as 272283001 + 280495504 = 16501^2 + 16748^2 .

It is not a de Polignac number, because 552778505 - 2⁴ = 552778489 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55277846 + ... + 55277855.

It is an arithmetic number, because the mean of its divisors is an integer number (165833553).

Almost surely, 2^552778505 is an apocalyptic number.

It is an amenable number.

552778505 is a deficient number, since it is larger than the sum of its proper divisors (110555707).

552778505 is a wasteful number, since it uses less digits than its factorization.

552778505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110555706.

The product of its (nonzero) digits is 490000, while the sum is 44.

The square root of 552778505 is about 23511.2420981963. The cubic root of 552778505 is about 820.6986436277.

The spelling of 552778505 in words is "five hundred fifty-two million, seven hundred seventy-eight thousand, five hundred five".