50551421 has 8 divisors (see below), whose sum is σ = 55252224. Its totient is φ = 46042560.

The previous prime is 50551411. The next prime is 50551429. The reversal of 50551421 is 12415505.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 50551421 - 2⁶ = 50551357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50551429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47435 + ... + 48488.

It is an arithmetic number, because the mean of its divisors is an integer number (6906528).

Almost surely, 2^50551421 is an apocalyptic number.

It is an amenable number.

50551421 is a deficient number, since it is larger than the sum of its proper divisors (4700803).

50551421 is a wasteful number, since it uses less digits than its factorization.

50551421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95971.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 50551421 is about 7109.9522501913. The cubic root of 50551421 is about 369.7525030982.

Adding to 50551421 its reverse (12415505), we get a palindrome (62966926).

The spelling of 50551421 in words is "fifty million, five hundred fifty-one thousand, four hundred twenty-one".