55097957 has 2 divisors, whose sum is σ = 55097958. Its totient is φ = 55097956.

The previous prime is 55097947. The next prime is 55097963. The reversal of 55097957 is 75979055.

55097957 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52983841 + 2114116 = 7279^2 + 1454^2 .

It is a cyclic number.

It is not a de Polignac number, because 55097957 - 2¹⁰ = 55096933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55097947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27548978 + 27548979.

It is an arithmetic number, because the mean of its divisors is an integer number (27548979).

Almost surely, 2^55097957 is an apocalyptic number.

It is an amenable number.

55097957 is a deficient number, since it is larger than the sum of its proper divisors (1).

55097957 is an equidigital number, since it uses as much as digits as its factorization.

55097957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 496125, while the sum is 47.

The square root of 55097957 is about 7422.7998086975. The cubic root of 55097957 is about 380.5208853926.

The spelling of 55097957 in words is "fifty-five million, ninety-seven thousand, nine hundred fifty-seven".