55496509 has 2 divisors, whose sum is σ = 55496510. Its totient is φ = 55496508.

The previous prime is 55496501. The next prime is 55496533. The reversal of 55496509 is 90569455.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43956900 + 11539609 = 6630^2 + 3397^2 .

It is a cyclic number.

It is not a de Polignac number, because 55496509 - 2³ = 55496501 is a prime.

It is a super-2 number, since 2×55496509² = 6159725022374162, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55496501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27748254 + 27748255.

It is an arithmetic number, because the mean of its divisors is an integer number (27748255).

Almost surely, 2^55496509 is an apocalyptic number.

It is an amenable number.

55496509 is a deficient number, since it is larger than the sum of its proper divisors (1).

55496509 is an equidigital number, since it uses as much as digits as its factorization.

55496509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 243000, while the sum is 43.

The square root of 55496509 is about 7449.5979086122. The cubic root of 55496509 is about 381.4361833974.

The spelling of 55496509 in words is "fifty-five million, four hundred ninety-six thousand, five hundred nine".