5121900 has 144 divisors (see below), whose sum is σ = 18887680. Its totient is φ = 1166400.

The previous prime is 5121889. The next prime is 5121901. The reversal of 5121900 is 91215.

5121900 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×5121900² = 52467719220000, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (5121901) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18765 + ... + 19035.

Almost surely, 2^5121900 is an apocalyptic number.

5121900 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 5121900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9443840).

5121900 is an abundant number, since it is smaller than the sum of its proper divisors (13765780).

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

5121900 is a wasteful number, since it uses less digits than its factorization.

5121900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301 (or 288 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

The square root of 5121900 is about 2263.1615055051. The cubic root of 5121900 is about 172.3760924925.

The spelling of 5121900 in words is "five million, one hundred twenty-one thousand, nine hundred".