252776540 has 12 divisors (see below), whose sum is σ = 530830776. Its totient is φ = 101110608.

The previous prime is 252776533. The next prime is 252776549. The reversal of 252776540 is 45677252.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 252776494 and 252776503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252776549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6319394 + ... + 6319433.

It is an arithmetic number, because the mean of its divisors is an integer number (44235898).

Almost surely, 2^252776540 is an apocalyptic number.

252776540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252776540 is an abundant number, since it is smaller than the sum of its proper divisors (278054236).

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

252776540 is a wasteful number, since it uses less digits than its factorization.

252776540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12638836 (or 12638834 counting only the distinct ones).

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

The square root of 252776540 is about 15898.9477639245. The cubic root of 252776540 is about 632.2840915541.

The spelling of 252776540 in words is "two hundred fifty-two million, seven hundred seventy-six thousand, five hundred forty".