52780318 has 8 divisors (see below), whose sum is σ = 79910712. Its totient is φ = 26143416.

The previous prime is 52780313. The next prime is 52780327. The reversal of 52780318 is 81308725.

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

It is a super-2 number, since 2×52780318² = 5571523936362248, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52780313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123105 + ... + 123532.

It is an arithmetic number, because the mean of its divisors is an integer number (9988839).

Almost surely, 2^52780318 is an apocalyptic number.

52780318 is a deficient number, since it is larger than the sum of its proper divisors (27130394).

52780318 is a wasteful number, since it uses less digits than its factorization.

52780318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246746.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 52780318 is about 7265.0064005478. The cubic root of 52780318 is about 375.1088703155.

It can be divided in two parts, 52 and 780318, that multiplied together give a triangular number (40576536 = T₉₀₀₈).

The spelling of 52780318 in words is "fifty-two million, seven hundred eighty thousand, three hundred eighteen".