2420251515 has 64 divisors (see below), whose sum is σ = 4735687680. Its totient is φ = 1162990080.

The previous prime is 2420251513. The next prime is 2420251523. The reversal of 2420251515 is 5151520242.

It is not a de Polignac number, because 2420251515 - 2¹ = 2420251513 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (2420251513) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 160594 + ... + 175016.

It is an arithmetic number, because the mean of its divisors is an integer number (73995120).

Almost surely, 2^2420251515 is an apocalyptic number.

2420251515 is a deficient number, since it is larger than the sum of its proper divisors (2315436165).

2420251515 is a wasteful number, since it uses less digits than its factorization.

2420251515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14561 (or 14555 counting only the distinct ones).

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

The square root of 2420251515 is about 49196.0518232917. The cubic root of 2420251515 is about 1342.6211993822.

Adding to 2420251515 its reverse (5151520242), we get a palindrome (7571771757).

The spelling of 2420251515 in words is "two billion, four hundred twenty million, two hundred fifty-one thousand, five hundred fifteen".