253523145 has 16 divisors (see below), whose sum is σ = 405836352. Its totient is φ = 135145920.

The previous prime is 253523119. The next prime is 253523173. The reversal of 253523145 is 541325352.

It is not a de Polignac number, because 253523145 - 2⁵ = 253523113 is a prime.

It is a Curzon number.

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, 51199 + ... + 55931.

It is an arithmetic number, because the mean of its divisors is an integer number (25364772).

Almost surely, 2^253523145 is an apocalyptic number.

It is an amenable number.

253523145 is a deficient number, since it is larger than the sum of its proper divisors (152313207).

253523145 is a wasteful number, since it uses less digits than its factorization.

253523145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8312.

The product of its digits is 18000, while the sum is 30.

The square root of 253523145 is about 15922.4101504766. The cubic root of 253523145 is about 632.9059879499.

Adding to 253523145 its reverse (541325352), we get a palindrome (794848497).

The spelling of 253523145 in words is "two hundred fifty-three million, five hundred twenty-three thousand, one hundred forty-five".