2100531544 has 8 divisors (see below), whose sum is σ = 3938496660. Its totient is φ = 1050265768.

The previous prime is 2100531533. The next prime is 2100531599. The reversal of 2100531544 is 4451350012.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131283214 + ... + 131283229.

Almost surely, 2^2100531544 is an apocalyptic number.

It is an amenable number.

2100531544 is a deficient number, since it is larger than the sum of its proper divisors (1837965116).

2100531544 is a wasteful number, since it uses less digits than its factorization.

2100531544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262566449 (or 262566445 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 2100531544 is about 45831.5562031228. The cubic root of 2100531544 is about 1280.6872009794.

Adding to 2100531544 its reverse (4451350012), we get a palindrome (6551881556).

The spelling of 2100531544 in words is "two billion, one hundred million, five hundred thirty-one thousand, five hundred forty-four".