51544501 has 2 divisors, whose sum is σ = 51544502. Its totient is φ = 51544500.

The previous prime is 51544489. The next prime is 51544529. The reversal of 51544501 is 10544515.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33651601 + 17892900 = 5801^2 + 4230^2 .

It is a cyclic number.

It is not a de Polignac number, because 51544501 - 2¹⁷ = 51413429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51544201) 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, 25772250 + 25772251.

It is an arithmetic number, because the mean of its divisors is an integer number (25772251).

Almost surely, 2^51544501 is an apocalyptic number.

It is an amenable number.

51544501 is a deficient number, since it is larger than the sum of its proper divisors (1).

51544501 is an equidigital number, since it uses as much as digits as its factorization.

51544501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 51544501 is about 7179.4499092897. The cubic root of 51544501 is about 372.1580748974.

The spelling of 51544501 in words is "fifty-one million, five hundred forty-four thousand, five hundred one".