245406520 has 16 divisors (see below), whose sum is σ = 552164760. Its totient is φ = 98162592.

The previous prime is 245406517. The next prime is 245406529. The reversal of 245406520 is 25604542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245406529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3067542 + ... + 3067621.

Almost surely, 2^245406520 is an apocalyptic number.

245406520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245406520 is an abundant number, since it is smaller than the sum of its proper divisors (306758240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

245406520 is a wasteful number, since it uses less digits than its factorization.

245406520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6135174 (or 6135170 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 245406520 is about 15665.4562652991. The cubic root of 245406520 is about 626.0783687233.

The spelling of 245406520 in words is "two hundred forty-five million, four hundred six thousand, five hundred twenty".