55089497 has 2 divisors, whose sum is σ = 55089498. Its totient is φ = 55089496.

The previous prime is 55089491. The next prime is 55089553. The reversal of 55089497 is 79498055.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53304601 + 1784896 = 7301^2 + 1336^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55089497 is a prime.

It is not a weakly prime, because it can be changed into another prime (55089491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27544748 + 27544749.

It is an arithmetic number, because the mean of its divisors is an integer number (27544749).

Almost surely, 2^55089497 is an apocalyptic number.

It is an amenable number.

55089497 is a deficient number, since it is larger than the sum of its proper divisors (1).

55089497 is an equidigital number, since it uses as much as digits as its factorization.

55089497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 453600, while the sum is 47.

The square root of 55089497 is about 7422.2299209874. The cubic root of 55089497 is about 380.5014087390.

The spelling of 55089497 in words is "fifty-five million, eighty-nine thousand, four hundred ninety-seven".