2155504544 has 12 divisors (see below), whose sum is σ = 4243649634. Its totient is φ = 1077752256.

The previous prime is 2155504543. The next prime is 2155504573. The reversal of 2155504544 is 4454055512.

It can be written as a sum of positive squares in only one way, i.e., 1937056144 + 218448400 = 44012^2 + 14780^2 .

It is not an unprimeable number, because it can be changed into a prime (2155504543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33679727 + ... + 33679790.

Almost surely, 2^2155504544 is an apocalyptic number.

It is an amenable number.

2155504544 is a deficient number, since it is larger than the sum of its proper divisors (2088145090).

2155504544 is an equidigital number, since it uses as much as digits as its factorization.

2155504544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67359527 (or 67359519 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 35.

The square root of 2155504544 is about 46427.4115582594. The cubic root of 2155504544 is about 1291.7634165051.

The spelling of 2155504544 in words is "two billion, one hundred fifty-five million, five hundred four thousand, five hundred forty-four".