51504332253 has 16 divisors (see below), whose sum is σ = 77498683200. Its totient is φ = 30138375680.

The previous prime is 51504332249. The next prime is 51504332339. The reversal of 51504332253 is 35223340515.

It is a cyclic number.

It is not a de Polignac number, because 51504332253 - 2² = 51504332249 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51504332233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26908308 + ... + 26910221.

It is an arithmetic number, because the mean of its divisors is an integer number (4843667700).

Almost surely, 2^51504332253 is an apocalyptic number.

It is an amenable number.

51504332253 is a deficient number, since it is larger than the sum of its proper divisors (25994350947).

51504332253 is a wasteful number, since it uses less digits than its factorization.

51504332253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53818572.

The product of its (nonzero) digits is 54000, while the sum is 33.

Adding to 51504332253 its reverse (35223340515), we get a palindrome (86727672768).

The spelling of 51504332253 in words is "fifty-one billion, five hundred four million, three hundred thirty-two thousand, two hundred fifty-three".