2519487021 has 16 divisors (see below), whose sum is σ = 3403701504. Its totient is φ = 1657565184.

The previous prime is 2519487013. The next prime is 2519487059. The reversal of 2519487021 is 1207849152.

It is not a de Polignac number, because 2519487021 - 2³ = 2519487013 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2519487011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90460 + ... + 114986.

It is an arithmetic number, because the mean of its divisors is an integer number (212731344).

Almost surely, 2^2519487021 is an apocalyptic number.

It is an amenable number.

2519487021 is a deficient number, since it is larger than the sum of its proper divisors (884214483).

2519487021 is a wasteful number, since it uses less digits than its factorization.

2519487021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24980.

The product of its (nonzero) digits is 40320, while the sum is 39.

The square root of 2519487021 is about 50194.4919388572. The cubic root of 2519487021 is about 1360.7260794544.

The spelling of 2519487021 in words is "two billion, five hundred nineteen million, four hundred eighty-seven thousand, twenty-one".