2651350421 has 12 divisors (see below), whose sum is σ = 2844136044. Its totient is φ = 2470608000.

The previous prime is 2651350397. The next prime is 2651350453. The reversal of 2651350421 is 1240531562.

It can be written as a sum of positive squares in 2 ways, for example, as 79744900 + 2571605521 = 8930^2 + 50711^2 .

It is not a de Polignac number, because 2651350421 - 2¹⁸ = 2651088277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2651350621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38180 + ... + 82221.

It is an arithmetic number, because the mean of its divisors is an integer number (237011337).

Almost surely, 2^2651350421 is an apocalyptic number.

It is an amenable number.

2651350421 is a deficient number, since it is larger than the sum of its proper divisors (192785623).

2651350421 is a wasteful number, since it uses less digits than its factorization.

2651350421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120500 (or 120481 counting only the distinct ones).

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

The square root of 2651350421 is about 51491.2654826039. The cubic root of 2651350421 is about 1384.0625265850.

Adding to 2651350421 its reverse (1240531562), we get a palindrome (3891881983).

The spelling of 2651350421 in words is "two billion, six hundred fifty-one million, three hundred fifty thousand, four hundred twenty-one".