52378261 has 4 divisors (see below), whose sum is σ = 56407372. Its totient is φ = 48349152.

The previous prime is 52378259. The next prime is 52378267. The reversal of 52378261 is 16287325.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 19096900 + 33281361 = 4370^2 + 5769^2 .

It is a cyclic number.

It is not a de Polignac number, because 52378261 - 2¹ = 52378259 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52378267) 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, 2014536 + ... + 2014561.

It is an arithmetic number, because the mean of its divisors is an integer number (14101843).

Almost surely, 2^52378261 is an apocalyptic number.

It is an amenable number.

52378261 is a deficient number, since it is larger than the sum of its proper divisors (4029111).

52378261 is a wasteful number, since it uses less digits than its factorization.

52378261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4029110.

The product of its digits is 20160, while the sum is 34.

The square root of 52378261 is about 7237.2827083098. The cubic root of 52378261 is about 374.1539706529.

The spelling of 52378261 in words is "fifty-two million, three hundred seventy-eight thousand, two hundred sixty-one".