51255411401 has 4 divisors (see below), whose sum is σ = 51257222400. Its totient is φ = 51253600404.

The previous prime is 51255411397. The next prime is 51255411409. The reversal of 51255411401 is 10411455215.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51255411401 - 2² = 51255411397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51255411409) 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, 862361 + ... + 919878.

It is an arithmetic number, because the mean of its divisors is an integer number (12814305600).

Almost surely, 2^51255411401 is an apocalyptic number.

It is an amenable number.

51255411401 is a deficient number, since it is larger than the sum of its proper divisors (1810999).

51255411401 is a wasteful number, since it uses less digits than its factorization.

51255411401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1810998.

The product of its (nonzero) digits is 4000, while the sum is 29.

Adding to 51255411401 its reverse (10411455215), we get a palindrome (61666866616).

The spelling of 51255411401 in words is "fifty-one billion, two hundred fifty-five million, four hundred eleven thousand, four hundred one".