253350890 has 32 divisors (see below), whose sum is σ = 503099856. Its totient is φ = 91261440.

The previous prime is 253350887. The next prime is 253350899. The reversal of 253350890 is 98053352.

It is a Cunningham number, because it is equal to 15917²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 84584809 + 168766081 = 9197^2 + 12991^2 .

It is a super-3 number, since 3×253350890³ (a number of 26 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 253350890.

It is not an unprimeable number, because it can be changed into a prime (253350899) 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 15 ways as a sum of consecutive naturals, for example, 18437 + ... + 29096.

Almost surely, 2^253350890 is an apocalyptic number.

253350890 is a deficient number, since it is larger than the sum of its proper divisors (249748966).

253350890 is a wasteful number, since it uses less digits than its factorization.

253350890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47594.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 253350890 is about 15917.0000314130. Note that the first 4 decimals coincide. The cubic root of 253350890 is about 632.7626138981.

The spelling of 253350890 in words is "two hundred fifty-three million, three hundred fifty thousand, eight hundred ninety".