50390100 has 90 divisors (see below), whose sum is σ = 163371054. Its totient is φ = 13435200.

The previous prime is 50390099. The next prime is 50390101. The reversal of 50390100 is 109305.

It is an interprime number because it is at equal distance from previous prime (50390099) and next prime (50390101).

It can be written as a sum of positive squares in 3 ways, for example, as 93636 + 50296464 = 306^2 + 7092^2 .

It is a tau number, because it is divible by the number of its divisors (90).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50390101) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 4990 + ... + 11210.

Almost surely, 2^50390100 is an apocalyptic number.

50390100 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 50390100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81685527).

50390100 is an abundant number, since it is smaller than the sum of its proper divisors (112980954).

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

50390100 is a wasteful number, since it uses less digits than its factorization.

50390100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6247 (or 6231 counting only the distinct ones).

The product of its (nonzero) digits is 135, while the sum is 18.

The square root of 50390100 is about 7098.5984532160. The cubic root of 50390100 is about 369.3587627174.

Adding to 50390100 its reverse (109305), we get a palindrome (50499405).

The spelling of 50390100 in words is "fifty million, three hundred ninety thousand, one hundred".