50061591 has 16 divisors (see below), whose sum is σ = 74412000. Its totient is φ = 33263424.

The previous prime is 50061563. The next prime is 50061601. The reversal of 50061591 is 19516005.

50061591 is a `hidden beast` number, since 500 + 6 + 159 + 1 = 666.

It is not a de Polignac number, because 50061591 - 2⁶ = 50061527 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50061551) 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, 5635 + ... + 11483.

It is an arithmetic number, because the mean of its divisors is an integer number (4650750).

Almost surely, 2^50061591 is an apocalyptic number.

50061591 is a deficient number, since it is larger than the sum of its proper divisors (24350409).

50061591 is a wasteful number, since it uses less digits than its factorization.

50061591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6175 (or 6169 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 27.

The square root of 50061591 is about 7075.4216128793. The cubic root of 50061591 is about 368.5543565839.

Adding to 50061591 its reverse (19516005), we get a palindrome (69577596).

The spelling of 50061591 in words is "fifty million, sixty-one thousand, five hundred ninety-one".