5245121520 has 160 divisors (see below), whose sum is σ = 19129400640. Its totient is φ = 1316413440.

The previous prime is 5245121509. The next prime is 5245121527. The reversal of 5245121520 is 251215425.

It is a super-2 number, since 2×5245121520² = 55022599519134220800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5245121527) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34701 + ... + 108140.

It is an arithmetic number, because the mean of its divisors is an integer number (119558754).

Almost surely, 2^5245121520 is an apocalyptic number.

It is an amenable number.

5245121520 is an abundant number, since it is smaller than the sum of its proper divisors (13884279120).

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

5245121520 is a wasteful number, since it uses less digits than its factorization.

5245121520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142880 (or 142868 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 5245121520 is about 72423.2111964113. The cubic root of 5245121520 is about 1737.4748150862.

Adding to 5245121520 its reverse (251215425), we get a palindrome (5496336945).

The spelling of 5245121520 in words is "five billion, two hundred forty-five million, one hundred twenty-one thousand, five hundred twenty".