52780057 has 8 divisors (see below), whose sum is σ = 58033152. Its totient is φ = 47602800.

The previous prime is 52780037. The next prime is 52780061. The reversal of 52780057 is 75008725.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52780057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52780037) 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, 17494 + ... + 20287.

It is an arithmetic number, because the mean of its divisors is an integer number (7254144).

Almost surely, 2^52780057 is an apocalyptic number.

It is an amenable number.

52780057 is a deficient number, since it is larger than the sum of its proper divisors (5253095).

52780057 is a wasteful number, since it uses less digits than its factorization.

52780057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37919.

The product of its (nonzero) digits is 19600, while the sum is 34.

The square root of 52780057 is about 7264.9884377059. The cubic root of 52780057 is about 375.1082520069.

The spelling of 52780057 in words is "fifty-two million, seven hundred eighty thousand, fifty-seven".