52007904 has 144 divisors (see below), whose sum is σ = 165110400. Its totient is φ = 15418368.

The previous prime is 52007849. The next prime is 52007909. The reversal of 52007904 is 40970025.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52007909) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 108337 + ... + 108815.

It is an arithmetic number, because the mean of its divisors is an integer number (1146600).

Almost surely, 2^52007904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52007904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82555200).

52007904 is an abundant number, since it is smaller than the sum of its proper divisors (113102496).

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

52007904 is a wasteful number, since it uses less digits than its factorization.

52007904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537 (or 526 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 52007904 is about 7211.6505738978. The cubic root of 52007904 is about 373.2700261135.

Adding to 52007904 its reverse (40970025), we get a palindrome (92977929).

The spelling of 52007904 in words is "fifty-two million, seven thousand, nine hundred four".