2556945542 has 8 divisors (see below), whose sum is σ = 3872655696. Its totient is φ = 1266060312.

The previous prime is 2556945533. The next prime is 2556945553. The reversal of 2556945542 is 2455496552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6205973 + ... + 6206384.

It is an arithmetic number, because the mean of its divisors is an integer number (484081962).

Almost surely, 2^2556945542 is an apocalyptic number.

2556945542 is a deficient number, since it is larger than the sum of its proper divisors (1315710154).

2556945542 is a wasteful number, since it uses less digits than its factorization.

2556945542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12412462.

The product of its digits is 2160000, while the sum is 47.

The square root of 2556945542 is about 50566.2490402442. The cubic root of 2556945542 is about 1367.4364731353.

The spelling of 2556945542 in words is "two billion, five hundred fifty-six million, nine hundred forty-five thousand, five hundred forty-two".