55240212551 has 8 divisors (see below), whose sum is σ = 56501217360. Its totient is φ = 53990032192.

The previous prime is 55240212493. The next prime is 55240212557. The reversal of 55240212551 is 15521204255.

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 55240212551 - 2¹⁸ = 55239950407 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 (55240212557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2695790 + ... + 2716203.

It is an arithmetic number, because the mean of its divisors is an integer number (7062652170).

Almost surely, 2^55240212551 is an apocalyptic number.

55240212551 is a deficient number, since it is larger than the sum of its proper divisors (1261004809).

55240212551 is a wasteful number, since it uses less digits than its factorization.

55240212551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5412225.

The product of its (nonzero) digits is 20000, while the sum is 32.

The spelling of 55240212551 in words is "fifty-five billion, two hundred forty million, two hundred twelve thousand, five hundred fifty-one".