52780291 has 4 divisors (see below), whose sum is σ = 55885032. Its totient is φ = 49675552.

The previous prime is 52780283. The next prime is 52780297. The reversal of 52780291 is 19208725.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 52780291 - 2³ = 52780283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52780297) 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, 1552345 + ... + 1552378.

It is an arithmetic number, because the mean of its divisors is an integer number (13971258).

Almost surely, 2^52780291 is an apocalyptic number.

52780291 is a deficient number, since it is larger than the sum of its proper divisors (3104741).

52780291 is a wasteful number, since it uses less digits than its factorization.

52780291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3104740.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 52780291 is about 7265.0045423248. The cubic root of 52780291 is about 375.1088063527.

The spelling of 52780291 in words is "fifty-two million, seven hundred eighty thousand, two hundred ninety-one".