49721100 has 288 divisors, whose sum is σ = 180821760. Its totient is φ = 10368000.

The previous prime is 49721083. The next prime is 49721137. The reversal of 49721100 is 112794.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 815070 + ... + 815130.

Almost surely, 2^49721100 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49721100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90410880).

49721100 is an abundant number, since it is smaller than the sum of its proper divisors (131100660).

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

49721100 is a wasteful number, since it uses less digits than its factorization.

49721100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121 (or 114 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 49721100 is about 7051.3190255441. The cubic root of 49721100 is about 367.7168880318.

Adding to 49721100 its reverse (112794), we get a palindrome (49833894).

The spelling of 49721100 in words is "forty-nine million, seven hundred twenty-one thousand, one hundred".