52040406 has 48 divisors (see below), whose sum is σ = 117133632. Its totient is φ = 15393840.

The previous prime is 52040399. The next prime is 52040473. The reversal of 52040406 is 60404025.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30385 + ... + 32051.

It is an arithmetic number, because the mean of its divisors is an integer number (2440284).

Almost surely, 2^52040406 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52040406, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58566816).

52040406 is an abundant number, since it is smaller than the sum of its proper divisors (65093226).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52040406 is a wasteful number, since it uses less digits than its factorization.

52040406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1737 (or 1726 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 52040406 is about 7213.9036589076. The cubic root of 52040406 is about 373.3477674762.

The spelling of 52040406 in words is "fifty-two million, forty thousand, four hundred six".