253533530 has 32 divisors (see below), whose sum is σ = 483615360. Its totient is φ = 95428800.

The previous prime is 253533523. The next prime is 253533541. The reversal of 253533530 is 35335352.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 253533493 and 253533502.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24272 + ... + 33108.

It is an arithmetic number, because the mean of its divisors is an integer number (15112980).

Almost surely, 2^253533530 is an apocalyptic number.

253533530 is a deficient number, since it is larger than the sum of its proper divisors (230081830).

253533530 is a wasteful number, since it uses less digits than its factorization.

253533530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9014.

The product of its (nonzero) digits is 20250, while the sum is 29.

The square root of 253533530 is about 15922.7362598267. The cubic root of 253533530 is about 632.9146296842.

Adding to 253533530 its reverse (35335352), we get a palindrome (288868882).

The spelling of 253533530 in words is "two hundred fifty-three million, five hundred thirty-three thousand, five hundred thirty".