2857055649 has 32 divisors (see below), whose sum is σ = 4626155520. Its totient is φ = 1531084032.

The previous prime is 2857055639. The next prime is 2857055651. The reversal of 2857055649 is 9465507582.

It is not a de Polignac number, because 2857055649 - 2⁴ = 2857055633 is a prime.

It is a super-2 number, since 2×2857055649² = 16325533962965622402, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (2857055629) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 86892 + ... + 115170.

It is an arithmetic number, because the mean of its divisors is an integer number (144567360).

Almost surely, 2^2857055649 is an apocalyptic number.

It is an amenable number.

2857055649 is a deficient number, since it is larger than the sum of its proper divisors (1769099871).

2857055649 is a wasteful number, since it uses less digits than its factorization.

2857055649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28589.

The product of its (nonzero) digits is 3024000, while the sum is 51.

The square root of 2857055649 is about 53451.4326187802. The cubic root of 2857055649 is about 1418.9689746842.

The spelling of 2857055649 in words is "two billion, eight hundred fifty-seven million, fifty-five thousand, six hundred forty-nine".