253985145 has 16 divisors (see below), whose sum is σ = 408125952. Its totient is φ = 134875520.

The previous prime is 253985129. The next prime is 253985153. The reversal of 253985145 is 541589352.

253985145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 253985145 - 2⁴ = 253985129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 253985097 and 253985106.

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, 32841 + ... + 39830.

It is an arithmetic number, because the mean of its divisors is an integer number (25507872).

Almost surely, 2^253985145 is an apocalyptic number.

It is an amenable number.

253985145 is a deficient number, since it is larger than the sum of its proper divisors (154140807).

253985145 is a wasteful number, since it uses less digits than its factorization.

253985145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72912.

The product of its digits is 216000, while the sum is 42.

The square root of 253985145 is about 15936.9114008957. The cubic root of 253985145 is about 633.2902068202.

The spelling of 253985145 in words is "two hundred fifty-three million, nine hundred eighty-five thousand, one hundred forty-five".