55251463531 has 8 divisors (see below), whose sum is σ = 60323382000. Its totient is φ = 50187721440.

The previous prime is 55251463523. The next prime is 55251463537. The reversal of 55251463531 is 13536415255.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55251463531 - 2³ = 55251463523 is a prime.

It is a super-2 number, since 2×55251463531² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55251463537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2029956 + ... + 2056993.

It is an arithmetic number, because the mean of its divisors is an integer number (7540422750).

Almost surely, 2^55251463531 is an apocalyptic number.

55251463531 is a deficient number, since it is larger than the sum of its proper divisors (5071918469).

55251463531 is a wasteful number, since it uses less digits than its factorization.

55251463531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4088189.

The product of its digits is 270000, while the sum is 40.

Adding to 55251463531 its reverse (13536415255), we get a palindrome (68787878786).

The spelling of 55251463531 in words is "fifty-five billion, two hundred fifty-one million, four hundred sixty-three thousand, five hundred thirty-one".