50400251 has 6 divisors (see below), whose sum is σ = 55398756. Its totient is φ = 45818300.

The previous prime is 50400241. The next prime is 50400299. The reversal of 50400251 is 15200405.

50400251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 50400251 - 2⁶ = 50400187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50400241) 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 5 ways as a sum of consecutive naturals, for example, 208145 + ... + 208386.

It is an arithmetic number, because the mean of its divisors is an integer number (9233126).

Almost surely, 2^50400251 is an apocalyptic number.

50400251 is a deficient number, since it is larger than the sum of its proper divisors (4998505).

50400251 is a wasteful number, since it uses less digits than its factorization.

50400251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416553 (or 416542 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 50400251 is about 7099.3134175074. The cubic root of 50400251 is about 369.3835632838.

Adding to 50400251 its reverse (15200405), we get a palindrome (65600656).

The spelling of 50400251 in words is "fifty million, four hundred thousand, two hundred fifty-one".