51124340553 has 64 divisors (see below), whose sum is σ = 81877727232. Its totient is φ = 27966343680.

The previous prime is 51124340551. The next prime is 51124340557. The reversal of 51124340553 is 35504342115.

It is not a de Polignac number, because 51124340553 - 2¹ = 51124340551 is a prime.

It is a super-2 number, since 2×51124340553² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (51124340551) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3931300 + ... + 3944282.

It is an arithmetic number, because the mean of its divisors is an integer number (1279339488).

Almost surely, 2^51124340553 is an apocalyptic number.

It is an amenable number.

51124340553 is a deficient number, since it is larger than the sum of its proper divisors (30753386679).

51124340553 is a wasteful number, since it uses less digits than its factorization.

51124340553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13214.

The product of its (nonzero) digits is 36000, while the sum is 33.

Adding to 51124340553 its reverse (35504342115), we get a palindrome (86628682668).

The spelling of 51124340553 in words is "fifty-one billion, one hundred twenty-four million, three hundred forty thousand, five hundred fifty-three".