2532557778 has 8 divisors (see below), whose sum is σ = 5065115568. Its totient is φ = 844185924.

The previous prime is 2532557749. The next prime is 2532557789. The reversal of 2532557778 is 8777552352.

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

2532557778 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 2532557778.

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, 211046476 + ... + 211046487.

It is an arithmetic number, because the mean of its divisors is an integer number (633139446).

Almost surely, 2^2532557778 is an apocalyptic number.

2532557778 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2532557778 is a wasteful number, since it uses less digits than its factorization.

2532557778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422092968.

The product of its digits is 4116000, while the sum is 51.

The square root of 2532557778 is about 50324.5246177249. The cubic root of 2532557778 is about 1363.0751094336.

The spelling of 2532557778 in words is "two billion, five hundred thirty-two million, five hundred fifty-seven thousand, seven hundred seventy-eight".