52780786 has 8 divisors (see below), whose sum is σ = 81725184. Its totient is φ = 25539060.

The previous prime is 52780781. The next prime is 52780787. The reversal of 52780786 is 68708725.

It is a happy number.

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

It is a super-2 number, since 2×52780786² = 5571622741555592, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (52780781) 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, 425590 + ... + 425713.

It is an arithmetic number, because the mean of its divisors is an integer number (10215648).

Almost surely, 2^52780786 is an apocalyptic number.

52780786 is a deficient number, since it is larger than the sum of its proper divisors (28944398).

52780786 is a wasteful number, since it uses less digits than its factorization.

52780786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851336.

The product of its (nonzero) digits is 188160, while the sum is 43.

The square root of 52780786 is about 7265.0386096703. The cubic root of 52780786 is about 375.1099790018.

The spelling of 52780786 in words is "fifty-two million, seven hundred eighty thousand, seven hundred eighty-six".