52780745 has 8 divisors (see below), whose sum is σ = 66090816. Its totient is φ = 40388656.

The previous prime is 52780729. The next prime is 52780747. The reversal of 52780745 is 54708725.

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

It is a cyclic number.

It is not a de Polignac number, because 52780745 - 2⁴ = 52780729 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 52780699 and 52780708.

It is not an unprimeable number, because it can be changed into a prime (52780747) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 229367 + ... + 229596.

It is an arithmetic number, because the mean of its divisors is an integer number (8261352).

Almost surely, 2^52780745 is an apocalyptic number.

It is an amenable number.

52780745 is a deficient number, since it is larger than the sum of its proper divisors (13310071).

52780745 is a wasteful number, since it uses less digits than its factorization.

52780745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458991.

The product of its (nonzero) digits is 78400, while the sum is 38.

The square root of 52780745 is about 7265.0357879366. The cubic root of 52780745 is about 375.1098818735.

The spelling of 52780745 in words is "fifty-two million, seven hundred eighty thousand, seven hundred forty-five".