55659319 has 2 divisors, whose sum is σ = 55659320. Its totient is φ = 55659318.

The previous prime is 55659299. The next prime is 55659337. The reversal of 55659319 is 91395655.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55659319 - 2¹⁵ = 55626551 is a prime.

It is a super-2 number, since 2×55659319² = 6195919583087522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55659419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27829659 + 27829660.

It is an arithmetic number, because the mean of its divisors is an integer number (27829660).

Almost surely, 2^55659319 is an apocalyptic number.

55659319 is a deficient number, since it is larger than the sum of its proper divisors (1).

55659319 is an equidigital number, since it uses as much as digits as its factorization.

55659319 is an evil number, because the sum of its binary digits is even.

The product of its digits is 182250, while the sum is 43.

The square root of 55659319 is about 7460.5173413109. The cubic root of 55659319 is about 381.8088254235.

It can be divided in two parts, 5565 and 9319, that added together give a square (14884 = 122²).

The spelling of 55659319 in words is "fifty-five million, six hundred fifty-nine thousand, three hundred nineteen".