53351009 has 2 divisors, whose sum is σ = 53351010. Its totient is φ = 53351008.

The previous prime is 53350987. The next prime is 53351021. The reversal of 53351009 is 90015335.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53290000 + 61009 = 7300^2 + 247^2 .

It is a cyclic number.

It is not a de Polignac number, because 53351009 - 2¹⁶ = 53285473 is a prime.

It is a super-2 number, since 2×53351009² = 5692660322636162, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (53351059) 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, 26675504 + 26675505.

It is an arithmetic number, because the mean of its divisors is an integer number (26675505).

Almost surely, 2^53351009 is an apocalyptic number.

It is an amenable number.

53351009 is a deficient number, since it is larger than the sum of its proper divisors (1).

53351009 is an equidigital number, since it uses as much as digits as its factorization.

53351009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2025, while the sum is 26.

The square root of 53351009 is about 7304.1775033196. The cubic root of 53351009 is about 376.4559905573.

The spelling of 53351009 in words is "fifty-three million, three hundred fifty-one thousand, nine".