7545115457 has 32 divisors (see below), whose sum is σ = 8931358080. Its totient is φ = 6297041920.

The previous prime is 7545115439. The next prime is 7545115481.

7545115457 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 7545115457 - 2¹⁰ = 7545114433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7545115057) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1771943 + ... + 1776195.

It is an arithmetic number, because the mean of its divisors is an integer number (279104940).

Almost surely, 2^7545115457 is an apocalyptic number.

It is an amenable number.

7545115457 is a deficient number, since it is larger than the sum of its proper divisors (1386242623).

7545115457 is a wasteful number, since it uses less digits than its factorization.

7545115457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4513.

The product of its digits is 490000, while the sum is 44.

The square root of 7545115457 is about 86862.6240508540. The cubic root of 7545115457 is about 1961.3508888760.

The spelling of 7545115457 in words is "seven billion, five hundred forty-five million, one hundred fifteen thousand, four hundred fifty-seven".