52123456 has 84 divisors (see below), whose sum is σ = 131344416. Its totient is φ = 20294400.

The previous prime is 52123447. The next prime is 52123457. The reversal of 52123456 is 65432125.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52123457) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33741 + ... + 35251.

It is an arithmetic number, because the mean of its divisors is an integer number (1563624).

Almost surely, 2^52123456 is an apocalyptic number.

52123456 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52123456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65672208).

52123456 is an abundant number, since it is smaller than the sum of its proper divisors (79220960).

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

52123456 is a wasteful number, since it uses less digits than its factorization.

52123456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1548 (or 1531 counting only the distinct ones).

The product of its digits is 7200, while the sum is 28.

The square root of 52123456 is about 7219.6576096100. The cubic root of 52123456 is about 373.5462674169.

It can be divided in two parts, 5212 and 3456, that added together give a palindrome (8668).

The spelling of 52123456 in words is "fifty-two million, one hundred twenty-three thousand, four hundred fifty-six".