2557065545 has 8 divisors (see below), whose sum is σ = 3090554880. Its totient is φ = 2030934960.

The previous prime is 2557065529. The next prime is 2557065569. The reversal of 2557065545 is 5455607552.

It is a happy number.

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

It is not a de Polignac number, because 2557065545 - 2⁴ = 2557065529 is a prime.

It is a super-2 number, since 2×2557065545² = 13077168402852294050, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2557065496 and 2557065505.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1838921 + ... + 1840310.

It is an arithmetic number, because the mean of its divisors is an integer number (386319360).

Almost surely, 2^2557065545 is an apocalyptic number.

It is an amenable number.

2557065545 is a deficient number, since it is larger than the sum of its proper divisors (533489335).

2557065545 is a wasteful number, since it uses less digits than its factorization.

2557065545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3679375.

The product of its (nonzero) digits is 1050000, while the sum is 44.

The square root of 2557065545 is about 50567.4356181921. The cubic root of 2557065545 is about 1367.4578650538.

The spelling of 2557065545 in words is "two billion, five hundred fifty-seven million, sixty-five thousand, five hundred forty-five".