52503140 has 48 divisors (see below), whose sum is σ = 117355392. Its totient is φ = 19662336.

The previous prime is 52503109. The next prime is 52503149. The reversal of 52503140 is 4130525.

52503140 = T₃₇₇ + T₃₇₈ + ... + T₇₁₆.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (52503149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104129 + ... + 104631.

It is an arithmetic number, because the mean of its divisors is an integer number (2444904).

Almost surely, 2^52503140 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 52503140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58677696).

52503140 is an abundant number, since it is smaller than the sum of its proper divisors (64852252).

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

52503140 is a wasteful number, since it uses less digits than its factorization.

52503140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 836 (or 834 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 52503140 is about 7245.9050504406. The cubic root of 52503140 is about 374.4510843103.

Adding to 52503140 its reverse (4130525), we get a palindrome (56633665).

The spelling of 52503140 in words is "fifty-two million, five hundred three thousand, one hundred forty".