55911497 has 2 divisors, whose sum is σ = 55911498. Its totient is φ = 55911496.

The previous prime is 55911469. The next prime is 55911523. The reversal of 55911497 is 79411955.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50965321 + 4946176 = 7139^2 + 2224^2 .

It is a cyclic number.

It is not a de Polignac number, because 55911497 - 2¹⁰ = 55910473 is a prime.

It is not a weakly prime, because it can be changed into another prime (55911407) 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, 27955748 + 27955749.

It is an arithmetic number, because the mean of its divisors is an integer number (27955749).

Almost surely, 2^55911497 is an apocalyptic number.

It is an amenable number.

55911497 is a deficient number, since it is larger than the sum of its proper divisors (1).

55911497 is an equidigital number, since it uses as much as digits as its factorization.

55911497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56700, while the sum is 41.

The square root of 55911497 is about 7477.3990798940. The cubic root of 55911497 is about 382.3845824893.

The spelling of 55911497 in words is "fifty-five million, nine hundred eleven thousand, four hundred ninety-seven".