50471381 has 4 divisors (see below), whose sum is σ = 50501472. Its totient is φ = 50441292.

The previous prime is 50471359. The next prime is 50471389. The reversal of 50471381 is 18317405.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50471381 is a prime.

It is a super-2 number, since 2×50471381² = 5094720600094322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50471389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12371 + ... + 15936.

It is an arithmetic number, because the mean of its divisors is an integer number (12625368).

Almost surely, 2^50471381 is an apocalyptic number.

It is an amenable number.

50471381 is a deficient number, since it is larger than the sum of its proper divisors (30091).

50471381 is a wasteful number, since it uses less digits than its factorization.

50471381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30090.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 50471381 is about 7104.3212905949. The cubic root of 50471381 is about 369.5572522484.

Adding to 50471381 its reverse (18317405), we get a palindrome (68788786).

The spelling of 50471381 in words is "fifty million, four hundred seventy-one thousand, three hundred eighty-one".