52378745 has 4 divisors (see below), whose sum is σ = 62854500. Its totient is φ = 41902992.

The previous prime is 52378723. The next prime is 52378769. The reversal of 52378745 is 54787325.

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 39100009 + 13278736 = 6253^2 + 3644^2 .

It is a cyclic number.

It is not a de Polignac number, because 52378745 - 2¹² = 52374649 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5237870 + ... + 5237879.

It is an arithmetic number, because the mean of its divisors is an integer number (15713625).

Almost surely, 2^52378745 is an apocalyptic number.

It is an amenable number.

52378745 is a deficient number, since it is larger than the sum of its proper divisors (10475755).

52378745 is a wasteful number, since it uses less digits than its factorization.

52378745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10475754.

The product of its digits is 235200, while the sum is 41.

The square root of 52378745 is about 7237.3161461967. The cubic root of 52378745 is about 374.1551231028.

The spelling of 52378745 in words is "fifty-two million, three hundred seventy-eight thousand, seven hundred forty-five".