55650551 has 8 divisors (see below), whose sum is σ = 60766608. Its totient is φ = 50544000.

The previous prime is 55650533. The next prime is 55650559. The reversal of 55650551 is 15505655.

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 55650551 - 2¹⁰ = 55649527 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 (55650559) 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, 16271 + ... + 19391.

It is an arithmetic number, because the mean of its divisors is an integer number (7595826).

Almost surely, 2^55650551 is an apocalyptic number.

55650551 is a deficient number, since it is larger than the sum of its proper divisors (5116057).

55650551 is a wasteful number, since it uses less digits than its factorization.

55650551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4753.

The product of its (nonzero) digits is 18750, while the sum is 32.

The square root of 55650551 is about 7459.9296913577. The cubic root of 55650551 is about 381.7887756179.

Subtracting from 55650551 its reverse (15505655), we obtain a square (40144896 = 6336²).

The spelling of 55650551 in words is "fifty-five million, six hundred fifty thousand, five hundred fifty-one".