55481597 has 2 divisors, whose sum is σ = 55481598. Its totient is φ = 55481596.

The previous prime is 55481593. The next prime is 55481603. The reversal of 55481597 is 79518455.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54007801 + 1473796 = 7349^2 + 1214^2 .

It is a cyclic number.

It is not a de Polignac number, because 55481597 - 2² = 55481593 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55481593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27740798 + 27740799.

It is an arithmetic number, because the mean of its divisors is an integer number (27740799).

Almost surely, 2^55481597 is an apocalyptic number.

It is an amenable number.

55481597 is a deficient number, since it is larger than the sum of its proper divisors (1).

55481597 is an equidigital number, since it uses as much as digits as its factorization.

55481597 is an evil number, because the sum of its binary digits is even.

The product of its digits is 252000, while the sum is 44.

The square root of 55481597 is about 7448.5969819826. The cubic root of 55481597 is about 381.4020161678.

The spelling of 55481597 in words is "fifty-five million, four hundred eighty-one thousand, five hundred ninety-seven".