5051221400 has 24 divisors (see below), whose sum is σ = 11744090220. Its totient is φ = 2020488480.

The previous prime is 5051221397. The next prime is 5051221403. The reversal of 5051221400 is 41221505.

It is an interprime number because it is at equal distance from previous prime (5051221397) and next prime (5051221403).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5051221403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12627854 + ... + 12628253.

Almost surely, 2^5051221400 is an apocalyptic number.

5051221400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

5051221400 is an abundant number, since it is smaller than the sum of its proper divisors (6692868820).

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

5051221400 is a wasteful number, since it uses less digits than its factorization.

5051221400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25256123 (or 25256114 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 5051221400 is about 71071.9452386102. The cubic root of 5051221400 is about 1715.7952775298.

Adding to 5051221400 its reverse (41221505), we get a palindrome (5092442905).

The spelling of 5051221400 in words is "five billion, fifty-one million, two hundred twenty-one thousand, four hundred".