252780054 has 8 divisors (see below), whose sum is σ = 505560120. Its totient is φ = 84260016.

The previous prime is 252780049. The next prime is 252780061. The reversal of 252780054 is 450087252.

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

252780054 is an admirable number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 252779997 and 252780024.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21064999 + ... + 21065010.

It is an arithmetic number, because the mean of its divisors is an integer number (63195015).

Almost surely, 2^252780054 is an apocalyptic number.

252780054 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.

252780054 is a wasteful number, since it uses less digits than its factorization.

252780054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42130014.

The product of its (nonzero) digits is 22400, while the sum is 33.

The square root of 252780054 is about 15899.0582739985. The cubic root of 252780054 is about 632.2870214620.

The spelling of 252780054 in words is "two hundred fifty-two million, seven hundred eighty thousand, fifty-four".