245355513 has 24 divisors (see below), whose sum is σ = 368327232. Its totient is φ = 144147168.

The previous prime is 245355511. The next prime is 245355589. The reversal of 245355513 is 315553542.

It is a happy number.

It is not a de Polignac number, because 245355513 - 2¹ = 245355511 is a prime.

It is not an unprimeable number, because it can be changed into a prime (245355511) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 468870 + ... + 469392.

It is an arithmetic number, because the mean of its divisors is an integer number (15346968).

Almost surely, 2^245355513 is an apocalyptic number.

245355513 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

245355513 is a deficient number, since it is larger than the sum of its proper divisors (122971719).

245355513 is an equidigital number, since it uses as much as digits as its factorization.

245355513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1085 (or 562 counting only the distinct ones).

The product of its digits is 45000, while the sum is 33.

The square root of 245355513 is about 15663.8281719380. The cubic root of 245355513 is about 626.0349895552.

The spelling of 245355513 in words is "two hundred forty-five million, three hundred fifty-five thousand, five hundred thirteen".