2547661448 has 8 divisors (see below), whose sum is σ = 4776865230. Its totient is φ = 1273830720.

The previous prime is 2547661439. The next prime is 2547661537. The reversal of 2547661448 is 8441667452.

Added to its reverse (8441667452) it gives a square (10989328900 = 104830²).

It is a happy number.

2547661448 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1577837284 + 969824164 = 39722^2 + 31142^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159228833 + ... + 159228848.

Almost surely, 2^2547661448 is an apocalyptic number.

It is an amenable number.

2547661448 is a deficient number, since it is larger than the sum of its proper divisors (2229203782).

2547661448 is a wasteful number, since it uses less digits than its factorization.

2547661448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318457687 (or 318457683 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 47.

The square root of 2547661448 is about 50474.3642654368. The cubic root of 2547661448 is about 1365.7794432921.

Adding to 2547661448 its reverse (8441667452), we get a square (10989328900 = 104830²).

The spelling of 2547661448 in words is "two billion, five hundred forty-seven million, six hundred sixty-one thousand, four hundred forty-eight".