5051621 has 2 divisors, whose sum is σ = 5051622. Its totient is φ = 5051620.

The previous prime is 5051617. The next prime is 5051633. The reversal of 5051621 is 1261505.

5051621 is an esthetic number in base 8, because in such base its adjacent digits differ by 1.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4389025 + 662596 = 2095^2 + 814^2 .

It is a cyclic number.

It is not a de Polignac number, because 5051621 - 2² = 5051617 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 5051593 and 5051602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5051611) 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, 2525810 + 2525811.

It is an arithmetic number, because the mean of its divisors is an integer number (2525811).

Almost surely, 2^5051621 is an apocalyptic number.

It is an amenable number.

5051621 is a deficient number, since it is larger than the sum of its proper divisors (1).

5051621 is an equidigital number, since it uses as much as digits as its factorization.

5051621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 5051621 is about 2247.5811442526. The cubic root of 5051621 is about 171.5840521618.

The spelling of 5051621 in words is "five million, fifty-one thousand, six hundred twenty-one".