2457545 has 8 divisors (see below), whose sum is σ = 2989896. Its totient is φ = 1938816.

The previous prime is 2457529. The next prime is 2457563. The reversal of 2457545 is 5457542.

2457545 = 1108² + 1109².

It can be written as a sum of positive squares in 4 ways, for example, as 1048576 + 1408969 = 1024^2 + 1187^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2457545 - 2⁴ = 2457529 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3002 + ... + 3731.

It is an arithmetic number, because the mean of its divisors is an integer number (373737).

2^2457545 is an apocalyptic number.

2457545 is the 1109-th centered square number.

It is an amenable number.

2457545 is a deficient number, since it is larger than the sum of its proper divisors (532351).

2457545 is an equidigital number, since it uses as much as digits as its factorization.

2457545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6811.

The product of its digits is 28000, while the sum is 32.

The square root of 2457545 is about 1567.6558933644. The cubic root of 2457545 is about 134.9482197395.

The spelling of 2457545 in words is "two million, four hundred fifty-seven thousand, five hundred forty-five".