55153697 has 2 divisors, whose sum is σ = 55153698. Its totient is φ = 55153696.

The previous prime is 55153669. The next prime is 55153711. The reversal of 55153697 is 79635155.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50353216 + 4800481 = 7096^2 + 2191^2 .

It is a cyclic number.

It is not a de Polignac number, because 55153697 - 2¹⁰ = 55152673 is a prime.

It is not a weakly prime, because it can be changed into another prime (55153667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27576848 + 27576849.

It is an arithmetic number, because the mean of its divisors is an integer number (27576849).

Almost surely, 2^55153697 is an apocalyptic number.

It is an amenable number.

55153697 is a deficient number, since it is larger than the sum of its proper divisors (1).

55153697 is an equidigital number, since it uses as much as digits as its factorization.

55153697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 141750, while the sum is 41.

The square root of 55153697 is about 7426.5535075161. The cubic root of 55153697 is about 380.6491604797.

The spelling of 55153697 in words is "fifty-five million, one hundred fifty-three thousand, six hundred ninety-seven".