2251040535421 has 8 divisors (see below), whose sum is σ = 2361889281024. Its totient is φ = 2141273241360.

The previous prime is 2251040535301. The next prime is 2251040535473. The reversal of 2251040535421 is 1245350401522.

It is a happy number.

2251040535421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2251040535421 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 (2251040535221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 270358621 + ... + 270366946.

It is an arithmetic number, because the mean of its divisors is an integer number (295236160128).

Almost surely, 2^{2251040535421} is an apocalyptic number.

It is an amenable number.

2251040535421 is a deficient number, since it is larger than the sum of its proper divisors (110848745603).

2251040535421 is a wasteful number, since it uses less digits than its factorization.

2251040535421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540725771.

The product of its (nonzero) digits is 48000, while the sum is 34.

Adding to 2251040535421 its reverse (1245350401522), we get a palindrome (3496390936943).

The spelling of 2251040535421 in words is "two trillion, two hundred fifty-one billion, forty million, five hundred thirty-five thousand, four hundred twenty-one".