2531543542 has 16 divisors (see below), whose sum is σ = 4386204432. Its totient is φ = 1083013120.

The previous prime is 2531543513. The next prime is 2531543543. The reversal of 2531543542 is 2453451352.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 2531543498 and 2531543507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2531543543) 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 in 7 ways as a sum of consecutive naturals, for example, 3384043 + ... + 3384790.

It is an arithmetic number, because the mean of its divisors is an integer number (274137777).

Almost surely, 2^2531543542 is an apocalyptic number.

2531543542 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2531543542 is a deficient number, since it is larger than the sum of its proper divisors (1854660890).

2531543542 is a wasteful number, since it uses less digits than its factorization.

2531543542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6768863.

The product of its digits is 72000, while the sum is 34.

The square root of 2531543542 is about 50314.4466530240. The cubic root of 2531543542 is about 1362.8931241891.

Adding to 2531543542 its reverse (2453451352), we get a palindrome (4984994894).

The spelling of 2531543542 in words is "two billion, five hundred thirty-one million, five hundred forty-three thousand, five hundred forty-two".