52542445 has 4 divisors (see below), whose sum is σ = 63050940. Its totient is φ = 42033952.

The previous prime is 52542439. The next prime is 52542449. The reversal of 52542445 is 54424525.

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 39212644 + 13329801 = 6262^2 + 3651^2 .

It is a cyclic number.

It is not a de Polignac number, because 52542445 - 2³ = 52542437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52542449) 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, 5254240 + ... + 5254249.

It is an arithmetic number, because the mean of its divisors is an integer number (15762735).

Almost surely, 2^52542445 is an apocalyptic number.

It is an amenable number.

52542445 is a deficient number, since it is larger than the sum of its proper divisors (10508495).

52542445 is a wasteful number, since it uses less digits than its factorization.

52542445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10508494.

The product of its digits is 32000, while the sum is 31.

The square root of 52542445 is about 7248.6167645972. The cubic root of 52542445 is about 374.5445017624.

The spelling of 52542445 in words is "fifty-two million, five hundred forty-two thousand, four hundred forty-five".