50891437 has 2 divisors, whose sum is σ = 50891438. Its totient is φ = 50891436.

The previous prime is 50891411. The next prime is 50891483. The reversal of 50891437 is 73419805.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47073321 + 3818116 = 6861^2 + 1954^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50891437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 50891396 and 50891405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50891837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25445718 + 25445719.

It is an arithmetic number, because the mean of its divisors is an integer number (25445719).

Almost surely, 2^50891437 is an apocalyptic number.

It is an amenable number.

50891437 is a deficient number, since it is larger than the sum of its proper divisors (1).

50891437 is an equidigital number, since it uses as much as digits as its factorization.

50891437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 50891437 is about 7133.8234488947. The cubic root of 50891437 is about 370.5796538758.

The spelling of 50891437 in words is "fifty million, eight hundred ninety-one thousand, four hundred thirty-seven".