253500400 has 30 divisors (see below), whose sum is σ = 609035672. Its totient is φ = 101400000.

The previous prime is 253500389. The next prime is 253500409. The reversal of 253500400 is 4005352.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253500409) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 316476 + ... + 317275.

Almost surely, 2^253500400 is an apocalyptic number.

253500400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253500400 is an abundant number, since it is smaller than the sum of its proper divisors (355535272).

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

253500400 is a wasteful number, since it uses less digits than its factorization.

253500400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633769 (or 633758 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 253500400 is about 15921.6958895716. The cubic root of 253500400 is about 632.8870601879.

Adding to 253500400 its reverse (4005352), we get a palindrome (257505752).

The spelling of 253500400 in words is "two hundred fifty-three million, five hundred thousand, four hundred".