2521420415 has 8 divisors (see below), whose sum is σ = 3052481328. Its totient is φ = 1999285120.

The previous prime is 2521420409. The next prime is 2521420423. The reversal of 2521420415 is 5140241252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2521420415 - 2⁶ = 2521420351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2230781 + ... + 2231910.

It is an arithmetic number, because the mean of its divisors is an integer number (381560166).

Almost surely, 2^2521420415 is an apocalyptic number.

2521420415 is a deficient number, since it is larger than the sum of its proper divisors (531060913).

2521420415 is a wasteful number, since it uses less digits than its factorization.

2521420415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4462809.

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 2521420415 is about 50213.7472710412. The cubic root of 2521420415 is about 1361.0740533289.

Adding to 2521420415 its reverse (5140241252), we get a palindrome (7661661667).

The spelling of 2521420415 in words is "two billion, five hundred twenty-one million, four hundred twenty thousand, four hundred fifteen".