50555661 has 16 divisors (see below), whose sum is σ = 72930816. Its totient is φ = 30966336.

The previous prime is 50555657. The next prime is 50555669. The reversal of 50555661 is 16655505.

It is not a de Polignac number, because 50555661 - 2² = 50555657 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50555669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5791 + ... + 11603.

It is an arithmetic number, because the mean of its divisors is an integer number (4558176).

Almost surely, 2^50555661 is an apocalyptic number.

It is an amenable number.

50555661 is a deficient number, since it is larger than the sum of its proper divisors (22375155).

50555661 is a wasteful number, since it uses less digits than its factorization.

50555661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6052.

The product of its (nonzero) digits is 22500, while the sum is 33.

The square root of 50555661 is about 7110.2504175310. The cubic root of 50555661 is about 369.7628404718.

The spelling of 50555661 in words is "fifty million, five hundred fifty-five thousand, six hundred sixty-one".