2551141421 has 4 divisors (see below), whose sum is σ = 2553017244. Its totient is φ = 2549265600.

The previous prime is 2551141349. The next prime is 2551141429. The reversal of 2551141421 is 1241411552.

It is a happy number.

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 1615638025 + 935503396 = 40195^2 + 30586^2 .

It is a cyclic number.

It is not a de Polignac number, because 2551141421 - 2¹⁴ = 2551125037 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 (2551141429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 935870 + ... + 938591.

It is an arithmetic number, because the mean of its divisors is an integer number (638254311).

Almost surely, 2^2551141421 is an apocalyptic number.

It is an amenable number.

2551141421 is a deficient number, since it is larger than the sum of its proper divisors (1875823).

2551141421 is a wasteful number, since it uses less digits than its factorization.

2551141421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1875822.

The product of its digits is 1600, while the sum is 26.

The square root of 2551141421 is about 50508.8251793684. The cubic root of 2551141421 is about 1366.4010215857.

Adding to 2551141421 its reverse (1241411552), we get a palindrome (3792552973).

The spelling of 2551141421 in words is "two billion, five hundred fifty-one million, one hundred forty-one thousand, four hundred twenty-one".