51552431040 has 112 divisors (see below), whose sum is σ = 178558911360. Its totient is φ = 12497556480.

The previous prime is 51552431033. The next prime is 51552431107. The reversal of 51552431040 is 4013425515.

It is a super-2 number, since 2×51552431040² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 51552430989 and 51552431007.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2430370 + ... + 2451489.

Almost surely, 2^51552431040 is an apocalyptic number.

It is an amenable number.

51552431040 is an abundant number, since it is smaller than the sum of its proper divisors (127006480320).

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

51552431040 is a wasteful number, since it uses less digits than its factorization.

51552431040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4881890 (or 4881880 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 51552431040 its reverse (4013425515), we get a palindrome (55565856555).

The spelling of 51552431040 in words is "fifty-one billion, five hundred fifty-two million, four hundred thirty-one thousand, forty".