50999555 has 4 divisors (see below), whose sum is σ = 61199472. Its totient is φ = 40799640.

The previous prime is 50999539. The next prime is 50999561. The reversal of 50999555 is 55599905.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 50999555 - 2⁴ = 50999539 is a prime.

It is a super-2 number, since 2×50999555² = 5201909220396050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5099951 + ... + 5099960.

It is an arithmetic number, because the mean of its divisors is an integer number (15299868).

Almost surely, 2^50999555 is an apocalyptic number.

50999555 is a deficient number, since it is larger than the sum of its proper divisors (10199917).

50999555 is a wasteful number, since it uses less digits than its factorization.

50999555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10199916.

The product of its (nonzero) digits is 455625, while the sum is 47.

The square root of 50999555 is about 7141.3972722430. The cubic root of 50999555 is about 370.8418983279.

The spelling of 50999555 in words is "fifty million, nine hundred ninety-nine thousand, five hundred fifty-five".