2780055553 has 8 divisors (see below), whose sum is σ = 3106758816. Its totient is φ = 2465680800.

The previous prime is 2780055533. The next prime is 2780055637. The reversal of 2780055553 is 3555500872.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-2780055553 is a prime.

It is a super-2 number, since 2×2780055553² = 15457417755532271618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2780055533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3081651 + ... + 3082552.

It is an arithmetic number, because the mean of its divisors is an integer number (388344852).

Almost surely, 2^2780055553 is an apocalyptic number.

It is an amenable number.

2780055553 is a deficient number, since it is larger than the sum of its proper divisors (326703263).

2780055553 is a wasteful number, since it uses less digits than its factorization.

2780055553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6164255.

The product of its (nonzero) digits is 210000, while the sum is 40.

The square root of 2780055553 is about 52726.2321145746. The cubic root of 2780055553 is about 1406.1052338666.

The spelling of 2780055553 in words is "two billion, seven hundred eighty million, fifty-five thousand, five hundred fifty-three".