50121000 has 96 divisors (see below), whose sum is σ = 169439400. Its totient is φ = 13363200.

The previous prime is 50120957. The next prime is 50121007. The reversal of 50121000 is 12105.

It is a happy number.

50121000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 7584516 + 42536484 = 2754^2 + 6522^2 .

It is a super-2 number, since 2×50121000² = 5024229282000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (50121007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6216 + ... + 11784.

Almost surely, 2^50121000 is an apocalyptic number.

50121000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50121000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84719700).

50121000 is an abundant number, since it is smaller than the sum of its proper divisors (119318400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

50121000 is a wasteful number, since it uses less digits than its factorization.

50121000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5596 (or 5579 counting only the distinct ones).

The product of its (nonzero) digits is 10, while the sum is 9.

The square root of 50121000 is about 7079.6186337966. The cubic root of 50121000 is about 368.7000890027.

Adding to 50121000 its reverse (12105), we get a palindrome (50133105).

The spelling of 50121000 in words is "fifty million, one hundred twenty-one thousand".