50979999 has 32 divisors (see below), whose sum is σ = 81285120. Its totient is φ = 27804672.

The previous prime is 50979979. The next prime is 50980003. The reversal of 50979999 is 99997905.

It is not a de Polignac number, because 50979999 - 2⁵ = 50979967 is a prime.

50979999 is a modest number, since divided by 9999 gives 5097 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50979919) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58642 + ... + 59504.

It is an arithmetic number, because the mean of its divisors is an integer number (2540160).

Almost surely, 2^50979999 is an apocalyptic number.

50979999 is a deficient number, since it is larger than the sum of its proper divisors (30305121).

50979999 is a wasteful number, since it uses less digits than its factorization.

50979999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 999.

The product of its (nonzero) digits is 2066715, while the sum is 57.

The square root of 50979999 is about 7140.0279411218. The cubic root of 50979999 is about 370.7944919579.

It can be divided in two parts, 509 and 79999, that added together give a palindrome (80508).

The spelling of 50979999 in words is "fifty million, nine hundred seventy-nine thousand, nine hundred ninety-nine".