2557755755 has 4 divisors (see below), whose sum is σ = 3069306912. Its totient is φ = 2046204600.

The previous prime is 2557755701. The next prime is 2557755763. The reversal of 2557755755 is 5575577552.

It is a happy number.

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

It is not a de Polignac number, because 2557755755 - 2¹² = 2557751659 is a prime.

It is a super-2 number, since 2×2557755755² = 13084229004471240050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2557755697 and 2557755706.

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, 255775571 + ... + 255775580.

It is an arithmetic number, because the mean of its divisors is an integer number (767326728).

Almost surely, 2^2557755755 is an apocalyptic number.

2557755755 is a deficient number, since it is larger than the sum of its proper divisors (511551157).

2557755755 is an equidigital number, since it uses as much as digits as its factorization.

2557755755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511551156.

The product of its digits is 10718750, while the sum is 53.

The square root of 2557755755 is about 50574.2598067436. The cubic root of 2557755755 is about 1367.5808899520.

The spelling of 2557755755 in words is "two billion, five hundred fifty-seven million, seven hundred fifty-five thousand, seven hundred fifty-five".