50005551 has 16 divisors (see below), whose sum is σ = 71229024. Its totient is φ = 31094784.

The previous prime is 50005531. The next prime is 50005559. The reversal of 50005551 is 15550005.

It is not a de Polignac number, because 50005551 - 2²² = 45811247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50005559) 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, 1425 + ... + 10101.

It is an arithmetic number, because the mean of its divisors is an integer number (4451814).

Almost surely, 2^50005551 is an apocalyptic number.

50005551 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

50005551 is a deficient number, since it is larger than the sum of its proper divisors (21223473).

50005551 is a wasteful number, since it uses less digits than its factorization.

50005551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8810.

The product of its (nonzero) digits is 625, while the sum is 21.

The square root of 50005551 is about 7071.4603159461. The cubic root of 50005551 is about 368.4167827321.

Adding to 50005551 its reverse (15550005), we get a palindrome (65555556).

The spelling of 50005551 in words is "fifty million, five thousand, five hundred fifty-one".