253597820 has 24 divisors (see below), whose sum is σ = 608635104. Its totient is φ = 86947776.

The previous prime is 253597819. The next prime is 253597829. The reversal of 253597820 is 28795352.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253597829) 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, 905567 + ... + 905846.

It is an arithmetic number, because the mean of its divisors is an integer number (25359796).

Almost surely, 2^253597820 is an apocalyptic number.

253597820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253597820 is an abundant number, since it is smaller than the sum of its proper divisors (355037284).

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

253597820 is a wasteful number, since it uses less digits than its factorization.

253597820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1811429 (or 1811427 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 41.

The square root of 253597820 is about 15924.7549431695. The cubic root of 253597820 is about 632.9681224676.

The spelling of 253597820 in words is "two hundred fifty-three million, five hundred ninety-seven thousand, eight hundred twenty".