5255780278 has 48 divisors (see below), whose sum is σ = 9582084864. Its totient is φ = 2151718800.

The previous prime is 5255780273. The next prime is 5255780317. The reversal of 5255780278 is 8720875525.

It is a super-2 number, since 2×5255780278² = 55246452661227514568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5255780273) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3269751 + ... + 3271357.

It is an arithmetic number, because the mean of its divisors is an integer number (199626768).

Almost surely, 2^5255780278 is an apocalyptic number.

5255780278 is a deficient number, since it is larger than the sum of its proper divisors (4326304586).

5255780278 is a wasteful number, since it uses less digits than its factorization.

5255780278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3097 (or 3090 counting only the distinct ones).

The product of its (nonzero) digits is 1568000, while the sum is 49.

The square root of 5255780278 is about 72496.7604655546. The cubic root of 5255780278 is about 1738.6509424719.

The spelling of 5255780278 in words is "five billion, two hundred fifty-five million, seven hundred eighty thousand, two hundred seventy-eight".