2552527778 has 4 divisors (see below), whose sum is σ = 3828791670. Its totient is φ = 1276263888.

The previous prime is 2552527763. The next prime is 2552527793. The reversal of 2552527778 is 8777252552.

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

It is an interprime number because it is at equal distance from previous prime (2552527763) and next prime (2552527793).

It can be written as a sum of positive squares in only one way, i.e., 1934856169 + 617671609 = 43987^2 + 24853^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 638131943 + ... + 638131946.

Almost surely, 2^2552527778 is an apocalyptic number.

2552527778 is a deficient number, since it is larger than the sum of its proper divisors (1276263892).

2552527778 is a wasteful number, since it uses less digits than its factorization.

2552527778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1276263891.

The product of its digits is 2744000, while the sum is 50.

The square root of 2552527778 is about 50522.5472239870. The cubic root of 2552527778 is about 1366.6484894535.

The spelling of 2552527778 in words is "two billion, five hundred fifty-two million, five hundred twenty-seven thousand, seven hundred seventy-eight".