7445523457 has 4 divisors (see below), whose sum is σ = 7446940740. Its totient is φ = 7444106176.

The previous prime is 7445523443. The next prime is 7445523461. The reversal of 7445523457 is 7543255447.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4086277776 + 3359245681 = 63924^2 + 57959^2 .

It is a cyclic number.

It is not a de Polignac number, because 7445523457 - 2⁷ = 7445523329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7445523427) 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, 700732 + ... + 711277.

It is an arithmetic number, because the mean of its divisors is an integer number (1861735185).

Almost surely, 2^7445523457 is an apocalyptic number.

It is an amenable number.

7445523457 is a deficient number, since it is larger than the sum of its proper divisors (1417283).

7445523457 is a wasteful number, since it uses less digits than its factorization.

7445523457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1417282.

The product of its digits is 2352000, while the sum is 46.

The square root of 7445523457 is about 86287.4466941745. The cubic root of 7445523457 is about 1952.6830003519.

The spelling of 7445523457 in words is "seven billion, four hundred forty-five million, five hundred twenty-three thousand, four hundred fifty-seven".