50555551 has 8 divisors (see below), whose sum is σ = 51282000. Its totient is φ = 49834560.

The previous prime is 50555543. The next prime is 50555563. The reversal of 50555551 is 15555505.

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 50555551 - 2³ = 50555543 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 (50555521) 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, 19491 + ... + 21931.

It is an arithmetic number, because the mean of its divisors is an integer number (6410250).

Almost surely, 2^50555551 is an apocalyptic number.

50555551 is a deficient number, since it is larger than the sum of its proper divisors (726449).

50555551 is a wasteful number, since it uses less digits than its factorization.

50555551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2729.

The product of its (nonzero) digits is 15625, while the sum is 31.

The square root of 50555551 is about 7110.2426822156. The cubic root of 50555551 is about 369.7625722926.

The spelling of 50555551 in words is "fifty million, five hundred fifty-five thousand, five hundred fifty-one".