245457556 has 12 divisors (see below), whose sum is σ = 441160468. Its totient is φ = 119411712.

The previous prime is 245457551. The next prime is 245457571. The reversal of 245457556 is 655754542.

It can be written as a sum of positive squares in 2 ways, for example, as 165533956 + 79923600 = 12866^2 + 8940^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245457551) 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, 829101 + ... + 829396.

Almost surely, 2^245457556 is an apocalyptic number.

It is an amenable number.

245457556 is a deficient number, since it is larger than the sum of its proper divisors (195702912).

245457556 is a wasteful number, since it uses less digits than its factorization.

245457556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1658538 (or 1658536 counting only the distinct ones).

The product of its digits is 840000, while the sum is 43.

The square root of 245457556 is about 15667.0851149791. The cubic root of 245457556 is about 626.1217665392.

The spelling of 245457556 in words is "two hundred forty-five million, four hundred fifty-seven thousand, five hundred fifty-six".