51503230454 has 16 divisors (see below), whose sum is σ = 84250662720. Its totient is φ = 23469825600.

The previous prime is 51503230453. The next prime is 51503230459. The reversal of 51503230454 is 45403230515.

It is a happy number.

It is a super-2 number, since 2×51503230454² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51503230454.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51503230451) 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, 12535247 + ... + 12539354.

It is an arithmetic number, because the mean of its divisors is an integer number (5265666420).

Almost surely, 2^51503230454 is an apocalyptic number.

51503230454 is a deficient number, since it is larger than the sum of its proper divisors (32747432266).

51503230454 is a wasteful number, since it uses less digits than its factorization.

51503230454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25074695.

The product of its (nonzero) digits is 36000, while the sum is 32.

Adding to 51503230454 its reverse (45403230515), we get a palindrome (96906460969).

The spelling of 51503230454 in words is "fifty-one billion, five hundred three million, two hundred thirty thousand, four hundred fifty-four".