52780401 has 6 divisors (see below), whose sum is σ = 76238370. Its totient is φ = 35186928.

The previous prime is 52780391. The next prime is 52780457. The reversal of 52780401 is 10408725.

It can be written as a sum of positive squares in only one way, i.e., 45360225 + 7420176 = 6735^2 + 2724^2 .

It is not a de Polignac number, because 52780401 - 2⁶ = 52780337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52780001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2932236 + ... + 2932253.

It is an arithmetic number, because the mean of its divisors is an integer number (12706395).

Almost surely, 2^52780401 is an apocalyptic number.

It is an amenable number.

52780401 is a deficient number, since it is larger than the sum of its proper divisors (23457969).

52780401 is a wasteful number, since it uses less digits than its factorization.

52780401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5864495 (or 5864492 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 52780401 is about 7265.0121128598. The cubic root of 52780401 is about 375.1090669420.

The spelling of 52780401 in words is "fifty-two million, seven hundred eighty thousand, four hundred one".