2557220144 has 10 divisors (see below), whose sum is σ = 4954614060. Its totient is φ = 1278610064.

The previous prime is 2557220131. The next prime is 2557220147. The reversal of 2557220144 is 4410227552.

It is a self number, because there is not a number n which added to its sum of digits gives 2557220144.

It is not an unprimeable number, because it can be changed into a prime (2557220147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79913114 + ... + 79913145.

It is an arithmetic number, because the mean of its divisors is an integer number (495461406).

Almost surely, 2^2557220144 is an apocalyptic number.

It is an amenable number.

2557220144 is a deficient number, since it is larger than the sum of its proper divisors (2397393916).

2557220144 is a wasteful number, since it uses less digits than its factorization.

2557220144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159826267 (or 159826261 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 32.

The square root of 2557220144 is about 50568.9642369705. The cubic root of 2557220144 is about 1367.4854231218.

Adding to 2557220144 its reverse (4410227552), we get a palindrome (6967447696).

The spelling of 2557220144 in words is "two billion, five hundred fifty-seven million, two hundred twenty thousand, one hundred forty-four".