51455535253 has 4 divisors (see below), whose sum is σ = 51565718880. Its totient is φ = 51345351628.

The previous prime is 51455535199. The next prime is 51455535259. The reversal of 51455535253 is 35253555415.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51455535253 - 2¹³ = 51455527061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51455535259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55091113 + ... + 55092046.

It is an arithmetic number, because the mean of its divisors is an integer number (12891429720).

Almost surely, 2^51455535253 is an apocalyptic number.

It is an amenable number.

51455535253 is a deficient number, since it is larger than the sum of its proper divisors (110183627).

51455535253 is a wasteful number, since it uses less digits than its factorization.

51455535253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110183626.

The product of its digits is 1125000, while the sum is 43.

The spelling of 51455535253 in words is "fifty-one billion, four hundred fifty-five million, five hundred thirty-five thousand, two hundred fifty-three".