51512001234 has 32 divisors (see below), whose sum is σ = 106470794304. Its totient is φ = 16603614720.

The previous prime is 51512001227. The next prime is 51512001263. The reversal of 51512001234 is 43210021515.

It is a happy number.

It is a super-2 number, since 2×51512001234² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 898744 + ... + 954339.

It is an arithmetic number, because the mean of its divisors is an integer number (3327212322).

Almost surely, 2^51512001234 is an apocalyptic number.

51512001234 is an abundant number, since it is smaller than the sum of its proper divisors (54958793070).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51512001234 is a wasteful number, since it uses less digits than its factorization.

51512001234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1853242.

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 51512001234 its reverse (43210021515), we get a palindrome (94722022749).

The spelling of 51512001234 in words is "fifty-one billion, five hundred twelve million, one thousand, two hundred thirty-four".