5021551 has 2 divisors, whose sum is σ = 5021552. Its totient is φ = 5021550.

The previous prime is 5021543. The next prime is 5021561. The reversal of 5021551 is 1551205.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5021551 - 2³ = 5021543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5021531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2510775 + 2510776.

It is an arithmetic number, because the mean of its divisors is an integer number (2510776).

Almost surely, 2^5021551 is an apocalyptic number.

5021551 is a deficient number, since it is larger than the sum of its proper divisors (1).

5021551 is an equidigital number, since it uses as much as digits as its factorization.

5021551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 250, while the sum is 19.

The square root of 5021551 is about 2240.8817460991. The cubic root of 5021551 is about 171.2429204810.

Adding to 5021551 its reverse (1551205), we get a palindrome (6572756).

The spelling of 5021551 in words is "five million, twenty-one thousand, five hundred fifty-one".