245341520 has 20 divisors (see below), whose sum is σ = 570419220. Its totient is φ = 98136576.

The previous prime is 245341519. The next prime is 245341543. The reversal of 245341520 is 25143542.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 69089344 + 176252176 = 8312^2 + 13276^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×245341520² = 120384922871820800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 245341520.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1533305 + ... + 1533464.

It is an arithmetic number, because the mean of its divisors is an integer number (28520961).

Almost surely, 2^245341520 is an apocalyptic number.

245341520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245341520 is an abundant number, since it is smaller than the sum of its proper divisors (325077700).

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

245341520 is a wasteful number, since it uses less digits than its factorization.

245341520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3066782 (or 3066776 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 245341520 is about 15663.3814995358. The cubic root of 245341520 is about 626.0230880848.

The spelling of 245341520 in words is "two hundred forty-five million, three hundred forty-one thousand, five hundred twenty".