1253500523 has 4 divisors (see below), whose sum is σ = 1367455128. Its totient is φ = 1139545920.

The previous prime is 1253500519. The next prime is 1253500537. The reversal of 1253500523 is 3250053521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1253500523 - 2² = 1253500519 is a prime.

It is a super-2 number, since 2×1253500523² = 3142527122322547058, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1253500492 and 1253500501.

It is not an unprimeable number, because it can be changed into a prime (1253500513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56977286 + ... + 56977307.

It is an arithmetic number, because the mean of its divisors is an integer number (341863782).

Almost surely, 2^1253500523 is an apocalyptic number.

1253500523 is a deficient number, since it is larger than the sum of its proper divisors (113954605).

1253500523 is a wasteful number, since it uses less digits than its factorization.

1253500523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113954604.

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 1253500523 is about 35404.8093202039. The cubic root of 1253500523 is about 1078.2219609084.

It can be divided in two parts, 12 and 53500523, that added together give a palindrome (53500535).

The spelling of 1253500523 in words is "one billion, two hundred fifty-three million, five hundred thousand, five hundred twenty-three".