55453369 has 2 divisors, whose sum is σ = 55453370. Its totient is φ = 55453368.

The previous prime is 55453367. The next prime is 55453397. The reversal of 55453369 is 96335455.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55308969 + 144400 = 7437^2 + 380^2 .

It is a cyclic number.

It is not a de Polignac number, because 55453369 - 2¹ = 55453367 is a prime.

It is a super-2 number, since 2×55453369² = 6150152266900322, which contains 22 as substring.

Together with 55453367, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (55453367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27726684 + 27726685.

It is an arithmetic number, because the mean of its divisors is an integer number (27726685).

Almost surely, 2^55453369 is an apocalyptic number.

It is an amenable number.

55453369 is a deficient number, since it is larger than the sum of its proper divisors (1).

55453369 is an equidigital number, since it uses as much as digits as its factorization.

55453369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 243000, while the sum is 40.

The square root of 55453369 is about 7446.7018874130. The cubic root of 55453369 is about 381.3373217881.

Adding to 55453369 its product of digits (243000), we get a square (55696369 = 7463²).

The spelling of 55453369 in words is "fifty-five million, four hundred fifty-three thousand, three hundred sixty-nine".