52101440 has 56 divisors (see below), whose sum is σ = 129479040. Its totient is φ = 19931648.

The previous prime is 52101437. The next prime is 52101443. The reversal of 52101440 is 4410125.

It is an interprime number because it is at equal distance from previous prime (52101437) and next prime (52101443).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52101443) 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, 3821 + ... + 10899.

Almost surely, 2^52101440 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 52101440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64739520).

52101440 is an abundant number, since it is smaller than the sum of its proper divisors (77377600).

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

52101440 is a wasteful number, since it uses less digits than its factorization.

52101440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7119 (or 7109 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 52101440 is about 7218.1327225260. The cubic root of 52101440 is about 373.4936669601.

Adding to 52101440 its reverse (4410125), we get a palindrome (56511565).

The spelling of 52101440 in words is "fifty-two million, one hundred one thousand, four hundred forty".