2445257 has 4 divisors (see below), whose sum is σ = 2449860. Its totient is φ = 2440656.

The previous prime is 2445253. The next prime is 2445259. The reversal of 2445257 is 7525442.

It is a happy number.

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 383161 + 2062096 = 619^2 + 1436^2 .

It is a cyclic number.

It is not a de Polignac number, because 2445257 - 2² = 2445253 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2445253) 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, 1382 + ... + 2607.

It is an arithmetic number, because the mean of its divisors is an integer number (612465).

2^2445257 is an apocalyptic number.

It is an amenable number.

2445257 is a deficient number, since it is larger than the sum of its proper divisors (4603).

2445257 is an equidigital number, since it uses as much as digits as its factorization.

2445257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4602.

The product of its digits is 11200, while the sum is 29.

The square root of 2445257 is about 1563.7317544899. The cubic root of 2445257 is about 134.7229250885.

The spelling of 2445257 in words is "two million, four hundred forty-five thousand, two hundred fifty-seven".