50999957 has 4 divisors (see below), whose sum is σ = 51164256. Its totient is φ = 50835660.

The previous prime is 50999891. The next prime is 50999959. The reversal of 50999957 is 75999905.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 50999957 - 2⁸ = 50999701 is a prime.

It is a super-2 number, since 2×50999957² = 5201991228003698, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 50999899 and 50999908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50999959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81683 + ... + 82304.

It is an arithmetic number, because the mean of its divisors is an integer number (12791064).

Almost surely, 2^50999957 is an apocalyptic number.

It is an amenable number.

50999957 is a deficient number, since it is larger than the sum of its proper divisors (164299).

50999957 is a wasteful number, since it uses less digits than its factorization.

50999957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164298.

The product of its (nonzero) digits is 1148175, while the sum is 53.

The square root of 50999957 is about 7141.4254179400. The cubic root of 50999957 is about 370.8428727027.

The spelling of 50999957 in words is "fifty million, nine hundred ninety-nine thousand, nine hundred fifty-seven".