3251540420 has 12 divisors (see below), whose sum is σ = 6828234924. Its totient is φ = 1300616160.

The previous prime is 3251540419. The next prime is 3251540437. The reversal of 3251540420 is 240451523.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2393753476 + 857786944 = 48926^2 + 29288^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3251540420.

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, 81288491 + ... + 81288530.

It is an arithmetic number, because the mean of its divisors is an integer number (569019577).

Almost surely, 2^3251540420 is an apocalyptic number.

It is an amenable number.

3251540420 is an abundant number, since it is smaller than the sum of its proper divisors (3576694504).

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

3251540420 is a wasteful number, since it uses less digits than its factorization.

3251540420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162577030 (or 162577028 counting only the distinct ones).

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

The square root of 3251540420 is about 57022.2800315806. The cubic root of 3251540420 is about 1481.4820222750.

Adding to 3251540420 its reverse (240451523), we get a palindrome (3491991943).

The spelling of 3251540420 in words is "three billion, two hundred fifty-one million, five hundred forty thousand, four hundred twenty".