55453397 has 2 divisors, whose sum is σ = 55453398. Its totient is φ = 55453396.

The previous prime is 55453369. The next prime is 55453399. The reversal of 55453397 is 79335455.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50608996 + 4844401 = 7114^2 + 2201^2 .

It is a cyclic number.

It is not a de Polignac number, because 55453397 - 2¹² = 55449301 is a prime.

Together with 55453399, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55453399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27726698 + 27726699.

It is an arithmetic number, because the mean of its divisors is an integer number (27726699).

Almost surely, 2^55453397 is an apocalyptic number.

It is an amenable number.

55453397 is a deficient number, since it is larger than the sum of its proper divisors (1).

55453397 is an equidigital number, since it uses as much as digits as its factorization.

55453397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 283500, while the sum is 41.

The square root of 55453397 is about 7446.7037674397. The cubic root of 55453397 is about 381.3373859708.

The spelling of 55453397 in words is "fifty-five million, four hundred fifty-three thousand, three hundred ninety-seven".