2520315641 has 4 divisors (see below), whose sum is σ = 2523478692. Its totient is φ = 2517152592.

The previous prime is 2520315631. The next prime is 2520315653. The reversal of 2520315641 is 1465130252.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 870250000 + 1650065641 = 29500^2 + 40621^2 .

It is a cyclic number.

It is not a de Polignac number, because 2520315641 - 2²² = 2516121337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2520315601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1580330 + ... + 1581923.

It is an arithmetic number, because the mean of its divisors is an integer number (630869673).

Almost surely, 2^2520315641 is an apocalyptic number.

It is an amenable number.

2520315641 is a deficient number, since it is larger than the sum of its proper divisors (3163051).

2520315641 is an equidigital number, since it uses as much as digits as its factorization.

2520315641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3163050.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 2520315641 is about 50202.7453532175. The cubic root of 2520315641 is about 1360.8752369679.

Adding to 2520315641 its reverse (1465130252), we get a palindrome (3985445893).

The spelling of 2520315641 in words is "two billion, five hundred twenty million, three hundred fifteen thousand, six hundred forty-one".