253621130 has 64 divisors (see below), whose sum is σ = 560846592. Its totient is φ = 80593920.

The previous prime is 253621129. The next prime is 253621133. The reversal of 253621130 is 31126352.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 253621096 and 253621105.

It is not an unprimeable number, because it can be changed into a prime (253621133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78140 + ... + 81320.

It is an arithmetic number, because the mean of its divisors is an integer number (8763228).

Almost surely, 2^253621130 is an apocalyptic number.

253621130 is an abundant number, since it is smaller than the sum of its proper divisors (307225462).

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

253621130 is a wasteful number, since it uses less digits than its factorization.

253621130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3279.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 253621130 is about 15925.4868057463. The cubic root of 253621130 is about 632.9875154247.

Adding to 253621130 its reverse (31126352), we get a palindrome (284747482).

The spelling of 253621130 in words is "two hundred fifty-three million, six hundred twenty-one thousand, one hundred thirty".