52405445 has 8 divisors (see below), whose sum is σ = 63443736. Its totient is φ = 41552896.

The previous prime is 52405429. The next prime is 52405471. The reversal of 52405445 is 54450425.

It can be written as a sum of positive squares in 4 ways, for example, as 320356 + 52085089 = 566^2 + 7217^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 52405445 - 2⁴ = 52405429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45812 + ... + 46941.

It is an arithmetic number, because the mean of its divisors is an integer number (7930467).

Almost surely, 2^52405445 is an apocalyptic number.

It is an amenable number.

52405445 is a deficient number, since it is larger than the sum of its proper divisors (11038291).

52405445 is a wasteful number, since it uses less digits than its factorization.

52405445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92871.

The product of its (nonzero) digits is 16000, while the sum is 29.

The square root of 52405445 is about 7239.1605176291. The cubic root of 52405445 is about 374.2186873394.

The spelling of 52405445 in words is "fifty-two million, four hundred five thousand, four hundred forty-five".