7545435253 has 4 divisors (see below), whose sum is σ = 7554039820. Its totient is φ = 7536830688.

The previous prime is 7545435251. The next prime is 7545435257. The reversal of 7545435253 is 3525345457.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3525345457 = 3769 ⋅935353.

It can be written as a sum of positive squares in 2 ways, for example, as 4206560164 + 3338875089 = 64858^2 + 57783^2 .

It is a cyclic number.

It is not a de Polignac number, because 7545435253 - 2¹ = 7545435251 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7545435251) 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, 4300968 + ... + 4302721.

It is an arithmetic number, because the mean of its divisors is an integer number (1888509955).

Almost surely, 2^7545435253 is an apocalyptic number.

It is an amenable number.

7545435253 is a deficient number, since it is larger than the sum of its proper divisors (8604567).

7545435253 is an equidigital number, since it uses as much as digits as its factorization.

7545435253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8604566.

The product of its digits is 1260000, while the sum is 43.

The square root of 7545435253 is about 86864.4648461038. The cubic root of 7545435253 is about 1961.3785987815.

The spelling of 7545435253 in words is "seven billion, five hundred forty-five million, four hundred thirty-five thousand, two hundred fifty-three".