55842469 has 2 divisors, whose sum is σ = 55842470. Its totient is φ = 55842468.

The previous prime is 55842431. The next prime is 55842481. The reversal of 55842469 is 96424855.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50225569 + 5616900 = 7087^2 + 2370^2 .

It is a cyclic number.

It is not a de Polignac number, because 55842469 - 2⁷ = 55842341 is a prime.

It is a super-2 number, since 2×55842469² = 6236762688031922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55842499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27921234 + 27921235.

It is an arithmetic number, because the mean of its divisors is an integer number (27921235).

Almost surely, 2^55842469 is an apocalyptic number.

It is an amenable number.

55842469 is a deficient number, since it is larger than the sum of its proper divisors (1).

55842469 is an equidigital number, since it uses as much as digits as its factorization.

55842469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 345600, while the sum is 43.

The square root of 55842469 is about 7472.7818782566. The cubic root of 55842469 is about 382.2271544449.

The spelling of 55842469 in words is "fifty-five million, eight hundred forty-two thousand, four hundred sixty-nine".