2544660542 has 4 divisors (see below), whose sum is σ = 3816990816. Its totient is φ = 1272330270.

The previous prime is 2544660541. The next prime is 2544660551. The reversal of 2544660542 is 2450664452.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 2544660496 and 2544660505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2544660541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 636165134 + ... + 636165137.

It is an arithmetic number, because the mean of its divisors is an integer number (954247704).

Almost surely, 2^2544660542 is an apocalyptic number.

2544660542 is a deficient number, since it is larger than the sum of its proper divisors (1272330274).

2544660542 is a wasteful number, since it uses less digits than its factorization.

2544660542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272330273.

The product of its (nonzero) digits is 230400, while the sum is 38.

The square root of 2544660542 is about 50444.6284751905. The cubic root of 2544660542 is about 1365.2429792826.

The spelling of 2544660542 in words is "two billion, five hundred forty-four million, six hundred sixty thousand, five hundred forty-two".