2742257531 has 4 divisors (see below), whose sum is σ = 2953200432. Its totient is φ = 2531314632.

The previous prime is 2742257527. The next prime is 2742257543. The reversal of 2742257531 is 1357522472.

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

It is a cyclic number.

It is not a de Polignac number, because 2742257531 - 2² = 2742257527 is a prime.

It is a super-2 number, since 2×2742257531² = 15039952732652431922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2742257521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105471431 + ... + 105471456.

It is an arithmetic number, because the mean of its divisors is an integer number (738300108).

Almost surely, 2^2742257531 is an apocalyptic number.

2742257531 is a deficient number, since it is larger than the sum of its proper divisors (210942901).

2742257531 is a wasteful number, since it uses less digits than its factorization.

2742257531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210942900.

The product of its digits is 117600, while the sum is 38.

The square root of 2742257531 is about 52366.5688297410. The cubic root of 2742257531 is about 1399.7035989866.

The spelling of 2742257531 in words is "two billion, seven hundred forty-two million, two hundred fifty-seven thousand, five hundred thirty-one".