52405272 has 32 divisors (see below), whose sum is σ = 145570800. Its totient is φ = 17468352.

The previous prime is 52405259. The next prime is 52405273. The reversal of 52405272 is 27250425.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52405273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121093 + ... + 121524.

Almost surely, 2^52405272 is an apocalyptic number.

It is an amenable number.

52405272 is an abundant number, since it is smaller than the sum of its proper divisors (93165528).

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

52405272 is a wasteful number, since it uses less digits than its factorization.

52405272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242632 (or 242622 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 27.

The square root of 52405272 is about 7239.1485687199. The cubic root of 52405272 is about 374.2182755507.

Adding to 52405272 its reverse (27250425), we get a palindrome (79655697).

The spelling of 52405272 in words is "fifty-two million, four hundred five thousand, two hundred seventy-two".